darkcomet | 9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a

Analysis

max time kernel
152s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 01:24

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General

Target

9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe
Size

952KB
MD5

1b23fab35973b7f02afe4820582ef78a
SHA1

a2cf2ab66f58a456b137e5371b718e1f12cf78f5
SHA256

9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a
SHA512

2c491aeeaab19d3fcc324cd367c399c3dd7608c3dbd9693e76bbbdc7f6732018f80d7f6286cceb41dbdc6c978e335c6d96609d0d05b8a9715070abd0f8e75a74
SSDEEP

24576:dzIw8LgLA5I7w6Zr8EocfBIbg/qqrUjLA:WMLnEYly90

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

ultr4fucker.no-ip.org:1604

ultr4fucker.no-ip.org:1602

Mutex

DC_MUTEX-XSXR7S6

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
5t77d8EWQtDn
install
true
offline_keylogger
true
persistence
true
reg_key
svchost

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

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

Executes dropped EXE 2 IoCs

pid	Process
1516	svchost.exe
2260	msdcsc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
3280	attrib.exe
3328	attrib.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\12334 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\12334.exe"	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1516	svchost.exe
Token: SeSecurityPrivilege	1516	svchost.exe
Token: SeTakeOwnershipPrivilege	1516	svchost.exe
Token: SeLoadDriverPrivilege	1516	svchost.exe
Token: SeSystemProfilePrivilege	1516	svchost.exe
Token: SeSystemtimePrivilege	1516	svchost.exe
Token: SeProfSingleProcessPrivilege	1516	svchost.exe
Token: SeIncBasePriorityPrivilege	1516	svchost.exe
Token: SeCreatePagefilePrivilege	1516	svchost.exe
Token: SeBackupPrivilege	1516	svchost.exe
Token: SeRestorePrivilege	1516	svchost.exe
Token: SeShutdownPrivilege	1516	svchost.exe
Token: SeDebugPrivilege	1516	svchost.exe
Token: SeSystemEnvironmentPrivilege	1516	svchost.exe
Token: SeChangeNotifyPrivilege	1516	svchost.exe
Token: SeRemoteShutdownPrivilege	1516	svchost.exe
Token: SeUndockPrivilege	1516	svchost.exe
Token: SeManageVolumePrivilege	1516	svchost.exe
Token: SeImpersonatePrivilege	1516	svchost.exe
Token: SeCreateGlobalPrivilege	1516	svchost.exe
Token: 33	1516	svchost.exe
Token: 34	1516	svchost.exe
Token: 35	1516	svchost.exe
Token: 36	1516	svchost.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 2736 wrote to memory of 1516	2736	9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe	91
PID 1516 wrote to memory of 4632	1516	svchost.exe	92
PID 1516 wrote to memory of 4632	1516	svchost.exe	92
PID 1516 wrote to memory of 4632	1516	svchost.exe	92
PID 1516 wrote to memory of 1600	1516	svchost.exe	94
PID 1516 wrote to memory of 1600	1516	svchost.exe	94
PID 1516 wrote to memory of 1600	1516	svchost.exe	94
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 1516 wrote to memory of 1772	1516	svchost.exe	96
PID 4632 wrote to memory of 3280	4632	cmd.exe	97
PID 4632 wrote to memory of 3280	4632	cmd.exe	97
PID 4632 wrote to memory of 3280	4632	cmd.exe	97
PID 1600 wrote to memory of 3328	1600	cmd.exe	98
PID 1600 wrote to memory of 3328	1600	cmd.exe	98
PID 1600 wrote to memory of 3328	1600	cmd.exe	98
PID 1516 wrote to memory of 2260	1516	svchost.exe	99
PID 1516 wrote to memory of 2260	1516	svchost.exe	99
PID 1516 wrote to memory of 2260	1516	svchost.exe	99

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3280	attrib.exe
3328	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe
"C:\Users\Admin\AppData\Local\Temp\9033eb8237373f29ab501f3d705e4d6368c2655c9b8fb2122bdb93d141519f9a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\App\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\\App\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\App\svchost.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4632
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\App\svchost.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:3280
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\App" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1600
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\App" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:3328
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:1772
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:2260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\App\svchost.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

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

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1516-141-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-148-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-138-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-139-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-135-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-142-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1516-134-0x0000000000000000-mapping.dmp

Download
memory/1600-144-0x0000000000000000-mapping.dmp

Download
memory/1772-145-0x0000000000000000-mapping.dmp

Download
memory/2260-149-0x0000000000000000-mapping.dmp

Download
memory/2736-132-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/2736-133-0x00000000751A0000-0x0000000075751000-memory.dmp

Filesize
5.7MB

Download
memory/3280-146-0x0000000000000000-mapping.dmp

Download
memory/3328-147-0x0000000000000000-mapping.dmp

Download
memory/4632-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads