darkcomet | a56e1e7aad8332d9e8a2b349548599ff11b6c27e576a627b2ec9d822964970a0

General

Target

e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
Size

1.3MB
MD5

e635cf1f967e29ea6078f4a5491b4b89
SHA1

6faf30de2b4b1e198650bfa9aa054ceece5e8a2a
SHA256

a56e1e7aad8332d9e8a2b349548599ff11b6c27e576a627b2ec9d822964970a0
SHA512

9e8e26a437355e1fdf2ec0f621bd32b10cccf74886ab5631396bf668ffdcabf2635b81e23c930f26b55be988a84af73cf79801eed362fb4244f72bcf4b39ec3e
SSDEEP

24576:XarjK0uR6rw4Sp/rhEBjhOJcc5eJ0dpnMiQi6U6lCT4dvzR:XRmB4pnBHOO4dbR

Score

10^/10

darkcomet bc discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

BC

C2

me.codeunix.net:8443

Mutex

DC_MUTEX-W4J6FQN

Attributes

gencode
rVV8XaKZqPHj
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2108	firefox.exe
3436	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JavaUpdater\\JavaUpdater.exe"	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4500 set thread context of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

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	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	firefox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3436	vbc.exe
Token: SeSecurityPrivilege	3436	vbc.exe
Token: SeTakeOwnershipPrivilege	3436	vbc.exe
Token: SeLoadDriverPrivilege	3436	vbc.exe
Token: SeSystemProfilePrivilege	3436	vbc.exe
Token: SeSystemtimePrivilege	3436	vbc.exe
Token: SeProfSingleProcessPrivilege	3436	vbc.exe
Token: SeIncBasePriorityPrivilege	3436	vbc.exe
Token: SeCreatePagefilePrivilege	3436	vbc.exe
Token: SeBackupPrivilege	3436	vbc.exe
Token: SeRestorePrivilege	3436	vbc.exe
Token: SeShutdownPrivilege	3436	vbc.exe
Token: SeDebugPrivilege	3436	vbc.exe
Token: SeSystemEnvironmentPrivilege	3436	vbc.exe
Token: SeChangeNotifyPrivilege	3436	vbc.exe
Token: SeRemoteShutdownPrivilege	3436	vbc.exe
Token: SeUndockPrivilege	3436	vbc.exe
Token: SeManageVolumePrivilege	3436	vbc.exe
Token: SeImpersonatePrivilege	3436	vbc.exe
Token: SeCreateGlobalPrivilege	3436	vbc.exe
Token: 33	3436	vbc.exe
Token: 34	3436	vbc.exe
Token: 35	3436	vbc.exe
Token: 36	3436	vbc.exe
Token: SeDebugPrivilege	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3436	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 2108	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	84
PID 4500 wrote to memory of 2108	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	84
PID 4500 wrote to memory of 2108	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	84
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86
PID 4500 wrote to memory of 3436	4500	e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e635cf1f967e29ea6078f4a5491b4b89_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Users\Admin\AppData\Local\Temp\firefox.exe
  "C:\Users\Admin\AppData\Local\Temp\firefox.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Users\Admin\AppData\Local\Temp\AppLunch\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\\AppLunch\vbc.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

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\AppLunch\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

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

Filesize
898KB

MD5
c8d28f8b498cadbb9445ac4545bd41b7

SHA1
b0efe230c29e5545b73dcc6dea472b7725353812

SHA256
fb013cbcbfe22507dc4bbbc60267f5c28c749dfc04b6808c9870588ec816521d

SHA512
69d38dab476f552db08683038db9934601c7aed45602499cec02ca899d1779d8e14c831e3fff2a05b88690f327b65231cc7c907a9a3b24148d7ffe23dcfe060d

Download Submit
memory/3436-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-46-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-31-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-30-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-29-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/3436-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-44-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-42-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-38-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-35-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3436-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4500-0-0x00000000748C2000-0x00000000748C3000-memory.dmp

Filesize
4KB

Download
memory/4500-3-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/4500-2-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/4500-32-0x00000000748C2000-0x00000000748C3000-memory.dmp

Filesize
4KB

Download
memory/4500-1-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/4500-33-0x00000000748C0000-0x0000000074E71000-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