darkcomet | b7b1d2292495b26c07ace69d9b563e99f1f6125408085864b6fb2e172c4975fb

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 23:14

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General

Target

b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe
Size

585KB
MD5

b59f41b2e13be96995081ede3b5448ea
SHA1

7b824a918d04b6a01c98d2960c93baa93496031a
SHA256

b7b1d2292495b26c07ace69d9b563e99f1f6125408085864b6fb2e172c4975fb
SHA512

4f1eae4963fa07bdb107e8461804e0bb7b11b99faef81a4ee1a5ba67a115c422585c1431f3927f7b6a67a3336900aacac8244b48410a0dca8d5129bb8af4c9ec
SSDEEP

12288:K84skkP1VHr+d/yyrnMdYJpAsbaNSQDLV2yN+B0p8ol:ZkiPI/tbMdSasbaw4kyNug

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

crossfirenp.no-ip.org:1604

Mutex

DC_MUTEX-Y8TYL43

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
o3Lo08H6R2fU
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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

Executes dropped EXE 2 IoCs

pid	Process
2808	cryptedserver.exe
2588	msdcsc.exe

Loads dropped DLL 8 IoCs

pid	Process
1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe
1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe
2808	cryptedserver.exe
2808	cryptedserver.exe
2808	cryptedserver.exe
2700	vbc.exe
2588	msdcsc.exe
2588	msdcsc.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2700	2808	cryptedserver.exe	31

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	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cryptedserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2700	vbc.exe
Token: SeSecurityPrivilege	2700	vbc.exe
Token: SeTakeOwnershipPrivilege	2700	vbc.exe
Token: SeLoadDriverPrivilege	2700	vbc.exe
Token: SeSystemProfilePrivilege	2700	vbc.exe
Token: SeSystemtimePrivilege	2700	vbc.exe
Token: SeProfSingleProcessPrivilege	2700	vbc.exe
Token: SeIncBasePriorityPrivilege	2700	vbc.exe
Token: SeCreatePagefilePrivilege	2700	vbc.exe
Token: SeBackupPrivilege	2700	vbc.exe
Token: SeRestorePrivilege	2700	vbc.exe
Token: SeShutdownPrivilege	2700	vbc.exe
Token: SeDebugPrivilege	2700	vbc.exe
Token: SeSystemEnvironmentPrivilege	2700	vbc.exe
Token: SeChangeNotifyPrivilege	2700	vbc.exe
Token: SeRemoteShutdownPrivilege	2700	vbc.exe
Token: SeUndockPrivilege	2700	vbc.exe
Token: SeManageVolumePrivilege	2700	vbc.exe
Token: SeImpersonatePrivilege	2700	vbc.exe
Token: SeCreateGlobalPrivilege	2700	vbc.exe
Token: 33	2700	vbc.exe
Token: 34	2700	vbc.exe
Token: 35	2700	vbc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 1316 wrote to memory of 2808	1316	b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe	30
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2808 wrote to memory of 2700	2808	cryptedserver.exe	31
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32
PID 2700 wrote to memory of 2588	2700	vbc.exe	32

C:\Users\Admin\AppData\Local\Temp\b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b59f41b2e13be96995081ede3b5448ea_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Users\Admin\AppData\Local\Temp\cryptedserver.exe
  "C:\Users\Admin\AppData\Local\Temp\cryptedserver.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    - Modifies WinLogon for persistence
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2588

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cryptedserver.exe

Filesize
512KB

MD5
b107f10aa6630f171041d1656e149099

SHA1
04fd8a3dddf3d158cfac0f2188ff515a4a1b7a9e

SHA256
723b12e22d8175f36f2e7b193823e1696eb228c56cffc87904726de4247457c7

SHA512
0c0812515112a6bf0d8708f78d375016ca9ae86dbe38aa4f6437f67021d7b25015c141d5d9a3ddcf86d012277c8fc64ac4ac934ad2dec66ddc9e627af48895e3

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

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2700-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2700-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2808-13-0x0000000074032000-0x0000000074034000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads