darkcomet | 02c145a91eaba794aa9e8ad821fc525b7639ef403d2ea1174cafc5844087c685

General

Target

JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe
Size

937KB
MD5

8818e6f943ef82f4beb96729f17dea61
SHA1

fe4442b52984b2f608b316135fc1e363e6933d2a
SHA256

02c145a91eaba794aa9e8ad821fc525b7639ef403d2ea1174cafc5844087c685
SHA512

15932e956dfcff6240ed65ccb79d55b5fc168ae4037d09707b0adcb9eac42866b91a6395056f7e4c6ebc8b23b0e5983f64adf51bc7ed45cac2966eae9b0523b7
SSDEEP

24576:7E2MYXsfrM6XRnBvCkymIWG5O0v7QLLaN:YYf6hDIWj0v7R

Score

10^/10

darkcomet sushi discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
persistence
false

rc4.plain

Extracted

Family

darkcomet

Botnet

Sushi

C2

dcdemerde.no-ip.org:1500

Mutex

DC_MUTEX-HEV52P6

Attributes

InstallPath
Bootmgr.exe
gencode
2puz1m65c0Dd
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

rc4.plain

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:\\Windows\\system32\\Bootmgr.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
2500	Bootmgr.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\Bootmgr.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Bootmgr.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Bootmgr.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30

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	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bootmgr.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2280	vbc.exe
Token: SeSecurityPrivilege	2280	vbc.exe
Token: SeTakeOwnershipPrivilege	2280	vbc.exe
Token: SeLoadDriverPrivilege	2280	vbc.exe
Token: SeSystemProfilePrivilege	2280	vbc.exe
Token: SeSystemtimePrivilege	2280	vbc.exe
Token: SeProfSingleProcessPrivilege	2280	vbc.exe
Token: SeIncBasePriorityPrivilege	2280	vbc.exe
Token: SeCreatePagefilePrivilege	2280	vbc.exe
Token: SeBackupPrivilege	2280	vbc.exe
Token: SeRestorePrivilege	2280	vbc.exe
Token: SeShutdownPrivilege	2280	vbc.exe
Token: SeDebugPrivilege	2280	vbc.exe
Token: SeSystemEnvironmentPrivilege	2280	vbc.exe
Token: SeChangeNotifyPrivilege	2280	vbc.exe
Token: SeRemoteShutdownPrivilege	2280	vbc.exe
Token: SeUndockPrivilege	2280	vbc.exe
Token: SeManageVolumePrivilege	2280	vbc.exe
Token: SeImpersonatePrivilege	2280	vbc.exe
Token: SeCreateGlobalPrivilege	2280	vbc.exe
Token: 33	2280	vbc.exe
Token: 34	2280	vbc.exe
Token: 35	2280	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2196 wrote to memory of 2280	2196	JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe	30
PID 2280 wrote to memory of 2500	2280	vbc.exe	31
PID 2280 wrote to memory of 2500	2280	vbc.exe	31
PID 2280 wrote to memory of 2500	2280	vbc.exe	31
PID 2280 wrote to memory of 2500	2280	vbc.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8818e6f943ef82f4beb96729f17dea61.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2196
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\SysWOW64\Bootmgr.exe
    "C:\Windows\system32\Bootmgr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2500

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

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

\Windows\SysWOW64\Bootmgr.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2196-0-0x0000000073E01000-0x0000000073E02000-memory.dmp

Filesize
4KB

Download
memory/2196-1-0x0000000073E00000-0x00000000743AB000-memory.dmp

Filesize
5.7MB

Download
memory/2196-2-0x0000000073E00000-0x00000000743AB000-memory.dmp

Filesize
5.7MB

Download
memory/2196-19-0x0000000073E00000-0x00000000743AB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-12-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-10-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-9-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-17-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-8-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-14-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-7-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-18-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-5-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-20-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-22-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-21-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-3-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2280-31-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads