darkcomet | 8fd9a7f984a4c5a9e2ba89ee5aa29b6dad95d09296a40984ab359aa6cde0bbee

General

Target

8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe
Size

1.3MB
MD5

8a069c028fcc956f46943f1449640a91
SHA1

eff5a8f848a043dd1d34c22e79914bfba59804fd
SHA256

8fd9a7f984a4c5a9e2ba89ee5aa29b6dad95d09296a40984ab359aa6cde0bbee
SHA512

180bf1d41b6151e235e87c68aefd27c38f2922570a937481752cec0cd5535da6d4e7f0c1035726aaaf5ae7e4c294cdcdb6a553965361836559d43ba5446ab4fd
SSDEEP

12288:ANdxlPKsQ7FK9grZYg0nUvW9uzPPFhYyzGGzDrslSh/i+nNiiQ4qf9JYV578O92y:ANdxAsQAMv1/rsoxO9aXyvT8RYngUDrw

Score

10^/10

darkcomet rs discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

RS

C2

hackerkline1.no-ip.biz:200

Mutex

DC_MUTEX-Z47BQAX

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
fCKM0nfU7Sze
install
true
offline_keylogger
true
password
klin3CJK
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

Processes:

vbc.exe

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"	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

Processes:

vbc.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

Processes:

vbc.exemsdcsc.exe

pid	Process
1696	vbc.exe
4108	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

8a069c028fcc956f46943f1449640a91_JaffaCakes118.exevbc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdtr\\8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe"	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe

description	pid	Process	procid_target
PID 3516 set thread context of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85

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

Processes:

8a069c028fcc956f46943f1449640a91_JaffaCakes118.exevbc.exemsdcsc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

Processes:

vbc.exe

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

vbc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1696	vbc.exe
Token: SeSecurityPrivilege	1696	vbc.exe
Token: SeTakeOwnershipPrivilege	1696	vbc.exe
Token: SeLoadDriverPrivilege	1696	vbc.exe
Token: SeSystemProfilePrivilege	1696	vbc.exe
Token: SeSystemtimePrivilege	1696	vbc.exe
Token: SeProfSingleProcessPrivilege	1696	vbc.exe
Token: SeIncBasePriorityPrivilege	1696	vbc.exe
Token: SeCreatePagefilePrivilege	1696	vbc.exe
Token: SeBackupPrivilege	1696	vbc.exe
Token: SeRestorePrivilege	1696	vbc.exe
Token: SeShutdownPrivilege	1696	vbc.exe
Token: SeDebugPrivilege	1696	vbc.exe
Token: SeSystemEnvironmentPrivilege	1696	vbc.exe
Token: SeChangeNotifyPrivilege	1696	vbc.exe
Token: SeRemoteShutdownPrivilege	1696	vbc.exe
Token: SeUndockPrivilege	1696	vbc.exe
Token: SeManageVolumePrivilege	1696	vbc.exe
Token: SeImpersonatePrivilege	1696	vbc.exe
Token: SeCreateGlobalPrivilege	1696	vbc.exe
Token: 33	1696	vbc.exe
Token: 34	1696	vbc.exe
Token: 35	1696	vbc.exe
Token: 36	1696	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

8a069c028fcc956f46943f1449640a91_JaffaCakes118.exevbc.exe

description	pid	Process	procid_target
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 3516 wrote to memory of 1696	3516	8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe	85
PID 1696 wrote to memory of 4108	1696	vbc.exe	94
PID 1696 wrote to memory of 4108	1696	vbc.exe	94
PID 1696 wrote to memory of 4108	1696	vbc.exe	94

C:\Users\Admin\AppData\Local\Temp\8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8a069c028fcc956f46943f1449640a91_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516
- 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:1696
- - 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:4108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1696-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1696-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1696-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1696-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1696-16-0x00000000023D0000-0x00000000023D1000-memory.dmp

Filesize
4KB

Download
memory/1696-77-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3516-0-0x0000000074DA2000-0x0000000074DA3000-memory.dmp

Filesize
4KB

Download
memory/3516-1-0x0000000074DA0000-0x0000000075351000-memory.dmp

Filesize
5.7MB

Download
memory/3516-2-0x0000000074DA0000-0x0000000075351000-memory.dmp

Filesize
5.7MB

Download
memory/3516-15-0x0000000074DA0000-0x0000000075351000-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