darkcomet | 690d40f6a74d37e5f82caf43f8eb2c1a1d37749f145c6bc522acc011f7884069

General

Target

2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe
Size

941KB
MD5

2466ea7e364d34e42b94c5747ca2a1da
SHA1

53ba2a704952962b35dc32e5a084fe94e66a7f7b
SHA256

690d40f6a74d37e5f82caf43f8eb2c1a1d37749f145c6bc522acc011f7884069
SHA512

08856857ca8d598d5cd43c2d7616c66446cf3ba3ad8ba5953535e5b72ac8fb5e10bb60f8f291d86062c2aafd79e0eadea0c122418430fbaaad83893a0766dae2
SSDEEP

12288:YktwDM1afm34GNzONSFm9lAIpeSXLzdMWdSJfO:TYM1alyzhmYsPqWdS

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

seytaninamiri.no-ip.org:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
45mA5CehMwMt
install
true
offline_keylogger
false
persistence
false
reg_key
MicroUpdate

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

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"	Service.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Service.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	Service.exe

Executes dropped EXE 2 IoCs

pid	Process
400	Service.exe
4020	msdcsc.exe

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	Service.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5108 set thread context of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81

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

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\	Service.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	400	Service.exe
Token: SeSecurityPrivilege	400	Service.exe
Token: SeTakeOwnershipPrivilege	400	Service.exe
Token: SeLoadDriverPrivilege	400	Service.exe
Token: SeSystemProfilePrivilege	400	Service.exe
Token: SeSystemtimePrivilege	400	Service.exe
Token: SeProfSingleProcessPrivilege	400	Service.exe
Token: SeIncBasePriorityPrivilege	400	Service.exe
Token: SeCreatePagefilePrivilege	400	Service.exe
Token: SeBackupPrivilege	400	Service.exe
Token: SeRestorePrivilege	400	Service.exe
Token: SeShutdownPrivilege	400	Service.exe
Token: SeDebugPrivilege	400	Service.exe
Token: SeSystemEnvironmentPrivilege	400	Service.exe
Token: SeChangeNotifyPrivilege	400	Service.exe
Token: SeRemoteShutdownPrivilege	400	Service.exe
Token: SeUndockPrivilege	400	Service.exe
Token: SeManageVolumePrivilege	400	Service.exe
Token: SeImpersonatePrivilege	400	Service.exe
Token: SeCreateGlobalPrivilege	400	Service.exe
Token: 33	400	Service.exe
Token: 34	400	Service.exe
Token: 35	400	Service.exe
Token: 36	400	Service.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 5108 wrote to memory of 400	5108	2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe	81
PID 400 wrote to memory of 4020	400	Service.exe	82
PID 400 wrote to memory of 4020	400	Service.exe	82
PID 400 wrote to memory of 4020	400	Service.exe	82

C:\Users\Admin\AppData\Local\Temp\2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2466ea7e364d34e42b94c5747ca2a1da_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Users\Admin\AppData\Local\Temp\plugtemp\Service.exe
  C:\Users\Admin\AppData\Local\Temp\\plugtemp\Service.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:4020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\plugtemp\Service.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/400-6-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/400-9-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/400-10-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/400-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/400-13-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/400-74-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5108-0-0x0000000074892000-0x0000000074893000-memory.dmp

Filesize
4KB

Download
memory/5108-1-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/5108-2-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/5108-78-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads