darkcomet | 3f5e37013f992b218c16685e981bdba82886cd7f521ad2aff42a0a5a30579497

General

Target

JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe
Size

2.6MB
MD5

106ba4150b011aaf40d8b947225e3f51
SHA1

ffd99ea0c9478e060ae60faf1d4fbd7a88edaf9f
SHA256

3f5e37013f992b218c16685e981bdba82886cd7f521ad2aff42a0a5a30579497
SHA512

75c11bbf5742c9233431569e903b3f6e27b36bc690a146272b987d4c0fe9eaee407af9897893ad1368b1f2c8edbeec1bb36dd61709e8cafc6736f12a562ff5dd
SSDEEP

24576:z4nxVWjypb0lNU0ayYuu8LyLMIqiKkkhHGGJpVhQKOgoKgX+N1yPNZjSs4fy6uib:+8XlxhvLJp/+nlFZjSzXExessnkLY7N

Score

10^/10

darkcomet 2012 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

2012

C2

xtremedata1990.myvnc.com:200

Mutex

DC_MUTEX-4JZV5EN

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
YEgMKA1D2a4a
install
true
offline_keylogger
true
persistence
true
reg_key
rundll32

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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	Winrar.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Winrar.exe

Executes dropped EXE 3 IoCs

pid	Process
1332	Winrar.exe
2144	winrar-64Bit-400.exe
3272	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	Winrar.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4388 set thread context of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84

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 3 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	Winrar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe

Modifies registry class 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1332	Winrar.exe
Token: SeSecurityPrivilege	1332	Winrar.exe
Token: SeTakeOwnershipPrivilege	1332	Winrar.exe
Token: SeLoadDriverPrivilege	1332	Winrar.exe
Token: SeSystemProfilePrivilege	1332	Winrar.exe
Token: SeSystemtimePrivilege	1332	Winrar.exe
Token: SeProfSingleProcessPrivilege	1332	Winrar.exe
Token: SeIncBasePriorityPrivilege	1332	Winrar.exe
Token: SeCreatePagefilePrivilege	1332	Winrar.exe
Token: SeBackupPrivilege	1332	Winrar.exe
Token: SeRestorePrivilege	1332	Winrar.exe
Token: SeShutdownPrivilege	1332	Winrar.exe
Token: SeDebugPrivilege	1332	Winrar.exe
Token: SeSystemEnvironmentPrivilege	1332	Winrar.exe
Token: SeChangeNotifyPrivilege	1332	Winrar.exe
Token: SeRemoteShutdownPrivilege	1332	Winrar.exe
Token: SeUndockPrivilege	1332	Winrar.exe
Token: SeManageVolumePrivilege	1332	Winrar.exe
Token: SeImpersonatePrivilege	1332	Winrar.exe
Token: SeCreateGlobalPrivilege	1332	Winrar.exe
Token: 33	1332	Winrar.exe
Token: 34	1332	Winrar.exe
Token: 35	1332	Winrar.exe
Token: 36	1332	Winrar.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2144	winrar-64Bit-400.exe
2144	winrar-64Bit-400.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 1332	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	84
PID 4388 wrote to memory of 2144	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	85
PID 4388 wrote to memory of 2144	4388	JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe	85
PID 1332 wrote to memory of 3272	1332	Winrar.exe	86
PID 1332 wrote to memory of 3272	1332	Winrar.exe	86
PID 1332 wrote to memory of 3272	1332	Winrar.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_106ba4150b011aaf40d8b947225e3f51.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Users\Admin\AppData\Local\Temp\App\Winrar.exe
  C:\Users\Admin\AppData\Local\Temp\\App\Winrar.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:1332
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3272
- C:\Users\Admin\AppData\Local\Temp\winrar-64Bit-400.exe
  "C:\Users\Admin\AppData\Local\Temp\winrar-64Bit-400.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2144

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\winrar-64Bit-400.exe

Filesize
1.5MB

MD5
18198f0d8d195bfe22edbdc78ae3c227

SHA1
efa8f7aa0484a73d0a0a3195a9a7f231adb4c993

SHA256
1703c2c8754c9c1857e3ac1ab399badc1085e7a288007e58348e0e74b677b42e

SHA512
25b51d78eee52da53a4249b5f8e81c2f8d8021c40472c9bebc14dae10d3e1712df02b23ceda10639e973456bc81079d609c7b9f359a153a44d63e847e31e7986

Download Submit
memory/1332-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1332-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1332-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1332-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1332-14-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/1332-85-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4388-0-0x0000000074B52000-0x0000000074B53000-memory.dmp

Filesize
4KB

Download
memory/4388-2-0x0000000074B50000-0x0000000075101000-memory.dmp

Filesize
5.7MB

Download
memory/4388-1-0x0000000074B50000-0x0000000075101000-memory.dmp

Filesize
5.7MB

Download
memory/4388-73-0x0000000000F90000-0x0000000000FA0000-memory.dmp

Filesize
64KB

Download
memory/4388-87-0x0000000074B52000-0x0000000074B53000-memory.dmp

Filesize
4KB

Download
memory/4388-88-0x0000000074B50000-0x0000000075101000-memory.dmp

Filesize
5.7MB

Download
memory/4388-89-0x0000000000F90000-0x0000000000FA0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads