darkcomet | b67273426b187212e1b5eedb340c8a34d7b6f43339f2cfe8036b7b903edad9d5

General

Target

d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe
Size

596KB
MD5

d030e69d60fbc0819bbdaacc66a902bf
SHA1

77cb5716f9f5ccc26d172ec8f721e8e482d0dd37
SHA256

b67273426b187212e1b5eedb340c8a34d7b6f43339f2cfe8036b7b903edad9d5
SHA512

4f5ac3a31448ac1f580bc36fd8171cc178e68fa7460db9a5e41562ec634c28a7514be47d8e623c5547343771605a49bf58198a3f99f16489d57ded2ed32ea6da
SSDEEP

12288:OVZPjJA6ZkA+Ah8x/mYMIDWWwveLurnCWtoDH6An+fxBIjnq:OVBJFZkAT8xuY36W8nCyffAjn

Score

10^/10

darkcomet modiloader guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

nikospap.zapto.org:3206

Mutex

DCMIN_MUTEX-USMAYRA

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
dQyDfVnpjzSY
install
true
offline_keylogger
true
persistence
false
reg_key
Cleaner

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Modiloader family
modiloader

ModiLoader Second Stage 2 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7a-15.dat	modiloader_stage2
behavioral2/memory/3080-32-0x0000000000400000-0x0000000000411000-memory.dmp	modiloader_stage2

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3080	Build.exe
2072	IMDCSC.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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cleaner = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\DCSCMIN\\IMDCSC.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Update = "C:\\Users\\Admin\\AppData\\Roaming\\Win Update.exe"	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4296 set thread context of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1180	vbc.exe
Token: SeSecurityPrivilege	1180	vbc.exe
Token: SeTakeOwnershipPrivilege	1180	vbc.exe
Token: SeLoadDriverPrivilege	1180	vbc.exe
Token: SeSystemProfilePrivilege	1180	vbc.exe
Token: SeSystemtimePrivilege	1180	vbc.exe
Token: SeProfSingleProcessPrivilege	1180	vbc.exe
Token: SeIncBasePriorityPrivilege	1180	vbc.exe
Token: SeCreatePagefilePrivilege	1180	vbc.exe
Token: SeBackupPrivilege	1180	vbc.exe
Token: SeRestorePrivilege	1180	vbc.exe
Token: SeShutdownPrivilege	1180	vbc.exe
Token: SeDebugPrivilege	1180	vbc.exe
Token: SeSystemEnvironmentPrivilege	1180	vbc.exe
Token: SeChangeNotifyPrivilege	1180	vbc.exe
Token: SeRemoteShutdownPrivilege	1180	vbc.exe
Token: SeUndockPrivilege	1180	vbc.exe
Token: SeManageVolumePrivilege	1180	vbc.exe
Token: SeImpersonatePrivilege	1180	vbc.exe
Token: SeCreateGlobalPrivilege	1180	vbc.exe
Token: 33	1180	vbc.exe
Token: 34	1180	vbc.exe
Token: 35	1180	vbc.exe
Token: 36	1180	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 1180	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	83
PID 4296 wrote to memory of 3080	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	85
PID 4296 wrote to memory of 3080	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	85
PID 4296 wrote to memory of 3080	4296	d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe	85
PID 1180 wrote to memory of 2072	1180	vbc.exe	84
PID 1180 wrote to memory of 2072	1180	vbc.exe	84
PID 1180 wrote to memory of 2072	1180	vbc.exe	84

C:\Users\Admin\AppData\Local\Temp\d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d030e69d60fbc0819bbdaacc66a902bf_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4296
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2072
- C:\Users\Admin\AppData\Local\Temp\Build.exe
  "C:\Users\Admin\AppData\Local\Temp\Build.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3080

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\DCSCMIN\IMDCSC.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

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

Filesize
36KB

MD5
2bf16d68abc0cf9d18fb973621816b21

SHA1
8555e7452a780070e4e4ea5a7ca4801764996dc2

SHA256
0d088c8fe635cbd2afb1e3b414980f200add83a9bb9272883307f324b467a8c4

SHA512
a9b112202bca9f37fff0e7108d273de2ce4025d27a6bbc2a66c59d7590a63f648a61c645e5ba53308eb6203e8752e8525e7839f3200270d65cd801f71710c1d2

Download Submit
memory/1180-3-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1180-5-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1180-6-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1180-7-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1180-8-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1180-30-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/3080-32-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4296-0-0x0000000074D82000-0x0000000074D83000-memory.dmp

Filesize
4KB

Download
memory/4296-2-0x0000000074D80000-0x0000000075331000-memory.dmp

Filesize
5.7MB

Download
memory/4296-1-0x0000000074D80000-0x0000000075331000-memory.dmp

Filesize
5.7MB

Download
memory/4296-28-0x0000000074D80000-0x0000000075331000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads