darkcomet | e7acd4cea0465cf1ae8ab649003b4fbf4ebef8a1f6523703d9ce727186316dad

General

Target

17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe
Size

1.0MB
MD5

17a962c5ce396b28847e3cc78a3c7a41
SHA1

1891f2dfe6d03e0d5ca2000478c3e3b838c53bd1
SHA256

e7acd4cea0465cf1ae8ab649003b4fbf4ebef8a1f6523703d9ce727186316dad
SHA512

78ca120ddc6fba175fa7f4f8c283090dbea7419f8a21e7e91d8727f22a0395e23cd856cf49c7bf191e96b8886e240f15130047c76871e3bde72a16a7b927d704
SSDEEP

24576:cqK2zFhJVboggxl916FyanFDwxjK1eDWD7fJ:jBhJF7gxl916Fy1xjK1eD8fJ

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

rafag9.no-ip.org:82

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
23r1xY1998Cv
install
true
offline_keylogger
true
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"	win43.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	win43.exe

Executes dropped EXE 2 IoCs

pid	Process
524	win43.exe
5088	msdcsc.exe

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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\runAPI83 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\runAPI68.exe\""	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	win43.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1564 set thread context of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82

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	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win43.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	524	win43.exe
Token: SeSecurityPrivilege	524	win43.exe
Token: SeTakeOwnershipPrivilege	524	win43.exe
Token: SeLoadDriverPrivilege	524	win43.exe
Token: SeSystemProfilePrivilege	524	win43.exe
Token: SeSystemtimePrivilege	524	win43.exe
Token: SeProfSingleProcessPrivilege	524	win43.exe
Token: SeIncBasePriorityPrivilege	524	win43.exe
Token: SeCreatePagefilePrivilege	524	win43.exe
Token: SeBackupPrivilege	524	win43.exe
Token: SeRestorePrivilege	524	win43.exe
Token: SeShutdownPrivilege	524	win43.exe
Token: SeDebugPrivilege	524	win43.exe
Token: SeSystemEnvironmentPrivilege	524	win43.exe
Token: SeChangeNotifyPrivilege	524	win43.exe
Token: SeRemoteShutdownPrivilege	524	win43.exe
Token: SeUndockPrivilege	524	win43.exe
Token: SeManageVolumePrivilege	524	win43.exe
Token: SeImpersonatePrivilege	524	win43.exe
Token: SeCreateGlobalPrivilege	524	win43.exe
Token: 33	524	win43.exe
Token: 34	524	win43.exe
Token: 35	524	win43.exe
Token: 36	524	win43.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 1564 wrote to memory of 524	1564	17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe	82
PID 524 wrote to memory of 5088	524	win43.exe	83
PID 524 wrote to memory of 5088	524	win43.exe	83
PID 524 wrote to memory of 5088	524	win43.exe	83

C:\Users\Admin\AppData\Local\Temp\17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\17a962c5ce396b28847e3cc78a3c7a41_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Users\Admin\AppData\Local\Temp\win43.exe
  C:\Users\Admin\AppData\Local\Temp\win43.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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5088

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\win43.exe

Filesize
4KB

MD5
5e5ecae8b08152c885904cde71c50dad

SHA1
727f24d102ab29be690c783ddc149b3a39430fb6

SHA256
b3550952a2474802ae5f2d2d7e75987ccd7ca23baa8ba015c3eaa6fd04b55541

SHA512
dd6287a8471aa575abbcf46300ac64a170c0cb19052d779c7bc0899149c6114a4e42520756dae1598e18458d94522d6c7701a7bc3a37067ac2a1616dbbf8e5ea

Download Submit
memory/524-5-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/524-9-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/524-8-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/524-11-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/524-13-0x00000000022C0000-0x00000000022C1000-memory.dmp

Filesize
4KB

Download
memory/524-25-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/1564-0-0x00000000750D2000-0x00000000750D3000-memory.dmp

Filesize
4KB

Download
memory/1564-1-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/1564-2-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/1564-16-0x00000000750D0000-0x0000000075681000-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