darkcomet | b22ff14ede69c70b647ff15860bfe0c3caac3fb5c6e9c57574d0675159af568c

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
submitted
06/02/2025, 12:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe
Size

870KB
MD5

ab1935bc92bd21dc3785047cf028ec5f
SHA1

216604dbbeff4ce30e8ee51ef50156024cc91ae6
SHA256

b22ff14ede69c70b647ff15860bfe0c3caac3fb5c6e9c57574d0675159af568c
SHA512

47bb99e82733aac9066794d71c02a3b920ca433a53e5c7488abc29121ca1b658a924a5fc6256ddfd410a3d4e634ac2323989fbb84f4c8cea6e652871562eaae9
SSDEEP

12288:rj7BhxQlLuUxnfSZrRGypSbai8Kx03Old+m5sO0NFMh/U+xNbul0NBs9oYojKxDs:rraM/PywFgMz2NK28Yu+

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

createaz.no-ip.info:1995

Mutex

DC_MUTEX-JRLV581

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
C=XVpvd=zF*i
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

rc4.plain

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 4 IoCs

pid	Process
2932	vbc.exe
2336	STAR CRYPTER [PUBLIC] V1.3.EXE
4556	msdcsc.exe
1700	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	STAR CRYPTER [PUBLIC] V1.3.EXE
File created	C:\Windows\assembly\Desktop.ini	STAR CRYPTER [PUBLIC] V1.3.EXE

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1328 set thread context of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 4556 set thread context of 1700	4556	msdcsc.exe	90

UPX packed file 28 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2932-5-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-11-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-10-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-13-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-12-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-9-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2932-94-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-106-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-107-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-105-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-111-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-110-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-109-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-114-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-115-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-116-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-117-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-118-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-119-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-120-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-121-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-122-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-123-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-124-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-125-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-126-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-127-0x0000000000400000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1700-128-0x0000000000400000-0x0000000000510000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	STAR CRYPTER [PUBLIC] V1.3.EXE
File created	C:\Windows\assembly\Desktop.ini	STAR CRYPTER [PUBLIC] V1.3.EXE
File opened for modification	C:\Windows\assembly\Desktop.ini	STAR CRYPTER [PUBLIC] V1.3.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2932	vbc.exe
Token: SeSecurityPrivilege	2932	vbc.exe
Token: SeTakeOwnershipPrivilege	2932	vbc.exe
Token: SeLoadDriverPrivilege	2932	vbc.exe
Token: SeSystemProfilePrivilege	2932	vbc.exe
Token: SeSystemtimePrivilege	2932	vbc.exe
Token: SeProfSingleProcessPrivilege	2932	vbc.exe
Token: SeIncBasePriorityPrivilege	2932	vbc.exe
Token: SeCreatePagefilePrivilege	2932	vbc.exe
Token: SeBackupPrivilege	2932	vbc.exe
Token: SeRestorePrivilege	2932	vbc.exe
Token: SeShutdownPrivilege	2932	vbc.exe
Token: SeDebugPrivilege	2932	vbc.exe
Token: SeSystemEnvironmentPrivilege	2932	vbc.exe
Token: SeChangeNotifyPrivilege	2932	vbc.exe
Token: SeRemoteShutdownPrivilege	2932	vbc.exe
Token: SeUndockPrivilege	2932	vbc.exe
Token: SeManageVolumePrivilege	2932	vbc.exe
Token: SeImpersonatePrivilege	2932	vbc.exe
Token: SeCreateGlobalPrivilege	2932	vbc.exe
Token: 33	2932	vbc.exe
Token: 34	2932	vbc.exe
Token: 35	2932	vbc.exe
Token: 36	2932	vbc.exe
Token: SeIncreaseQuotaPrivilege	1700	vbc.exe
Token: SeSecurityPrivilege	1700	vbc.exe
Token: SeTakeOwnershipPrivilege	1700	vbc.exe
Token: SeLoadDriverPrivilege	1700	vbc.exe
Token: SeSystemProfilePrivilege	1700	vbc.exe
Token: SeSystemtimePrivilege	1700	vbc.exe
Token: SeProfSingleProcessPrivilege	1700	vbc.exe
Token: SeIncBasePriorityPrivilege	1700	vbc.exe
Token: SeCreatePagefilePrivilege	1700	vbc.exe
Token: SeBackupPrivilege	1700	vbc.exe
Token: SeRestorePrivilege	1700	vbc.exe
Token: SeShutdownPrivilege	1700	vbc.exe
Token: SeDebugPrivilege	1700	vbc.exe
Token: SeSystemEnvironmentPrivilege	1700	vbc.exe
Token: SeChangeNotifyPrivilege	1700	vbc.exe
Token: SeRemoteShutdownPrivilege	1700	vbc.exe
Token: SeUndockPrivilege	1700	vbc.exe
Token: SeManageVolumePrivilege	1700	vbc.exe
Token: SeImpersonatePrivilege	1700	vbc.exe
Token: SeCreateGlobalPrivilege	1700	vbc.exe
Token: 33	1700	vbc.exe
Token: 34	1700	vbc.exe
Token: 35	1700	vbc.exe
Token: 36	1700	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1700	vbc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 1328 wrote to memory of 2932	1328	JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe	84
PID 2932 wrote to memory of 2336	2932	vbc.exe	87
PID 2932 wrote to memory of 2336	2932	vbc.exe	87
PID 2932 wrote to memory of 4556	2932	vbc.exe	89
PID 2932 wrote to memory of 4556	2932	vbc.exe	89
PID 2932 wrote to memory of 4556	2932	vbc.exe	89
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 4556 wrote to memory of 1700	4556	msdcsc.exe	90
PID 1700 wrote to memory of 3624	1700	vbc.exe	91
PID 1700 wrote to memory of 3624	1700	vbc.exe	91
PID 1700 wrote to memory of 3624	1700	vbc.exe	91
PID 1700 wrote to memory of 1440	1700	vbc.exe	92
PID 1700 wrote to memory of 1440	1700	vbc.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab1935bc92bd21dc3785047cf028ec5f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1328
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Users\Admin\AppData\Local\Temp\STAR CRYPTER [PUBLIC] V1.3.EXE
    "C:\Users\Admin\AppData\Local\Temp\STAR CRYPTER [PUBLIC] V1.3.EXE"
    3⤵
    - Executes dropped EXE
    - Drops desktop.ini file(s)
    - Drops file in Windows directory
    PID:2336
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4556
  - - C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1700
    - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        5⤵
        
        PID:3624
    - - C:\Windows\explorer.exe
        
        "C:\Windows\explorer.exe"
        5⤵
        
        PID:1440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\STAR CRYPTER [PUBLIC] V1.3.EXE

Filesize
166KB

MD5
3a858af0c3716a5db1cb1de25e715e16

SHA1
ae848d345737f2915294d4af3efd51b5c4a34ece

SHA256
ee1884836e964010846b5da3fa4e3572d668a560da4db6c10f0d42e3641805f6

SHA512
eb4abfba30a3f1a3f9a4622f544413c28c9791f71e859f0cc360e84b5308e445d7265358f407a2ac843b374c541b710432c7fb42a5de5f5ca34e334e70f1546f

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
870KB

MD5
ab1935bc92bd21dc3785047cf028ec5f

SHA1
216604dbbeff4ce30e8ee51ef50156024cc91ae6

SHA256
b22ff14ede69c70b647ff15860bfe0c3caac3fb5c6e9c57574d0675159af568c

SHA512
47bb99e82733aac9066794d71c02a3b920ca433a53e5c7488abc29121ca1b658a924a5fc6256ddfd410a3d4e634ac2323989fbb84f4c8cea6e652871562eaae9

Download Submit
memory/1328-14-0x0000000075060000-0x0000000075611000-memory.dmp

Filesize
5.7MB

Download
memory/1328-1-0x0000000075060000-0x0000000075611000-memory.dmp

Filesize
5.7MB

Download
memory/1328-2-0x0000000075060000-0x0000000075611000-memory.dmp

Filesize
5.7MB

Download
memory/1328-0-0x0000000075062000-0x0000000075063000-memory.dmp

Filesize
4KB

Download
memory/1700-111-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-109-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-124-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-123-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-126-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-127-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-120-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-119-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-118-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-117-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-116-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-115-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-114-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-125-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-128-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-122-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-110-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-106-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-107-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-105-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/1700-121-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2336-97-0x000000001E070000-0x000000001E08A000-memory.dmp

Filesize
104KB

Download
memory/2336-36-0x000000001CA90000-0x000000001CADC000-memory.dmp

Filesize
304KB

Download
memory/2336-112-0x00007FFED85A5000-0x00007FFED85A6000-memory.dmp

Filesize
4KB

Download
memory/2336-113-0x00007FFED82F0000-0x00007FFED8C91000-memory.dmp

Filesize
9.6MB

Download
memory/2336-35-0x00000000016C0000-0x00000000016C8000-memory.dmp

Filesize
32KB

Download
memory/2336-34-0x000000001C830000-0x000000001C8CC000-memory.dmp

Filesize
624KB

Download
memory/2336-30-0x000000001BD30000-0x000000001BDD6000-memory.dmp

Filesize
664KB

Download
memory/2336-33-0x00007FFED82F0000-0x00007FFED8C91000-memory.dmp

Filesize
9.6MB

Download
memory/2336-32-0x000000001C2B0000-0x000000001C77E000-memory.dmp

Filesize
4.8MB

Download
memory/2336-31-0x00007FFED82F0000-0x00007FFED8C91000-memory.dmp

Filesize
9.6MB

Download
memory/2336-29-0x00007FFED85A5000-0x00007FFED85A6000-memory.dmp

Filesize
4KB

Download
memory/2932-9-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-94-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-12-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-15-0x0000000000710000-0x0000000000711000-memory.dmp

Filesize
4KB

Download
memory/2932-13-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-10-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-11-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download
memory/2932-5-0x0000000000400000-0x0000000000510000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads