darkcomet | ba91d49ac453d3eb14950819a8cd6ee72aa704a24f1e47d0f8e180a3dfc768e9

General

Target

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
Size

2.1MB
MD5

ed10850ad8d0971da324de2c30729742
SHA1

bb2f3935b780d1200554d9915da9e87d76edffbe
SHA256

ba91d49ac453d3eb14950819a8cd6ee72aa704a24f1e47d0f8e180a3dfc768e9
SHA512

197ce8f3282cfc640e702841d87f088e4a86a1c95f3bdb78f806eb86d1b72684ebfc1f53b98e8708e71c87b92c8f5b5f969bd84194a3260ea7f95980ef54a8dd
SSDEEP

49152:EiobiV082zrjoFFfQnU26RO0QaXIe7P7uCzrlOrtD57loZQu:ZVX2zraE1yIe+CzrlO557pu

Score

10^/10

darkcomet september 2021 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

SeptemBER 2021

C2

bonding79.ddns.net:3316

goodgt79.ddns.net:3316

whatis79.ddns.net:3316

smath79.ddns.net:3316

jacknop79.ddns.net:3316

chrisle79.ddns.net:3316

Mutex

DC_MUTEX-6JQTXC0

Attributes

gencode
cVaduGzs7zFu
install
false
offline_keylogger
true
password
Password20$
persistence
false

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

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\7QB313Lj8a3s62oa\\x1sA0oQ8UCHw.exe\",explorer.exe"	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Wine	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description pid process target process

PID 2320 set thread context of 4808 2320 ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe vbc.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

pid process

2320 ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
2320 ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	pid	process	target process
PID 2320 set thread context of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe

pid	process
2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
Token: SeDebugPrivilege	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4808	vbc.exe
Token: SeSecurityPrivilege	4808	vbc.exe
Token: SeTakeOwnershipPrivilege	4808	vbc.exe
Token: SeLoadDriverPrivilege	4808	vbc.exe
Token: SeSystemProfilePrivilege	4808	vbc.exe
Token: SeSystemtimePrivilege	4808	vbc.exe
Token: SeProfSingleProcessPrivilege	4808	vbc.exe
Token: SeIncBasePriorityPrivilege	4808	vbc.exe
Token: SeCreatePagefilePrivilege	4808	vbc.exe
Token: SeBackupPrivilege	4808	vbc.exe
Token: SeRestorePrivilege	4808	vbc.exe
Token: SeShutdownPrivilege	4808	vbc.exe
Token: SeDebugPrivilege	4808	vbc.exe
Token: SeSystemEnvironmentPrivilege	4808	vbc.exe
Token: SeChangeNotifyPrivilege	4808	vbc.exe
Token: SeRemoteShutdownPrivilege	4808	vbc.exe
Token: SeUndockPrivilege	4808	vbc.exe
Token: SeManageVolumePrivilege	4808	vbc.exe
Token: SeImpersonatePrivilege	4808	vbc.exe
Token: SeCreateGlobalPrivilege	4808	vbc.exe
Token: 33	4808	vbc.exe
Token: 34	4808	vbc.exe
Token: 35	4808	vbc.exe
Token: 36	4808	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

4808 vbc.exe

pid	process
4808	vbc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe

description	pid	process	target process
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe
PID 2320 wrote to memory of 4808	2320	ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ed10850ad8d0971da324de2c30729742_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2320

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

1

T1064

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

Scripting

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2320-0-0x0000000000840000-0x0000000000CBC000-memory.dmp

Filesize
4.5MB

Download
memory/2320-1-0x0000000000840000-0x0000000000CBC000-memory.dmp

Filesize
4.5MB

Download
memory/2320-2-0x0000000074500000-0x0000000074AB1000-memory.dmp

Filesize
5.7MB

Download
memory/2320-3-0x0000000074500000-0x0000000074AB1000-memory.dmp

Filesize
5.7MB

Download
memory/2320-4-0x0000000074500000-0x0000000074AB1000-memory.dmp

Filesize
5.7MB

Download
memory/2320-5-0x0000000004E40000-0x0000000004E50000-memory.dmp

Filesize
64KB

Download
memory/2320-22-0x0000000074500000-0x0000000074AB1000-memory.dmp

Filesize
5.7MB

Download
memory/2320-20-0x0000000074500000-0x0000000074AB1000-memory.dmp

Filesize
5.7MB

Download
memory/2320-19-0x0000000000840000-0x0000000000CBC000-memory.dmp

Filesize
4.5MB

Download
memory/2320-18-0x0000000000840000-0x0000000000CBC000-memory.dmp

Filesize
4.5MB

Download
memory/4808-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-14-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/4808-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-33-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads