dcrat | 9d1cda19a05364d02903a407a68a85313dff6bf47a4f3b42e62d125a8bfae4b8

General

Target

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
Size

768KB
MD5

adf5cb2ba4e13eba254adea54ee6855d
SHA1

00759c66c70ead273372cc31964f493105539704
SHA256

9d1cda19a05364d02903a407a68a85313dff6bf47a4f3b42e62d125a8bfae4b8
SHA512

c74b19c3be4bda23deb28ce880bf63751a2baa9cc8f15096187dab4c7a2bb2c01960b3e8baba364f076501fc6b9952932ccb4773d22c0ec4cd03fca54fd08ff7
SSDEEP

12288:QqnO6RZ6I3yp4AcLuLPoRTsJhHZt+Uj8f+ZVFpuolCcVArWU:Q+O6zi4hL0oRAzgEFpl

Score

10^/10

dcrat infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/memory/624-1-0x00000000003C0000-0x0000000000486000-memory.dmp	dcrat
behavioral2/files/0x0008000000023c91-11.dat	dcrat

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

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

dllhost.exe

pid	Process
4920	dllhost.exe

Drops file in Program Files directory 2 IoCs

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

description	ioc	Process
File created	C:\Program Files (x86)\Google\Temp\adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
File created	C:\Program Files (x86)\Google\Temp\3715b374ed12a5f7bba80691788471342e99600f	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

description	ioc	Process
File created	C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\AppxManifest\StartMenuExperienceHost.exe	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
File created	C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\AppxManifest\55b276f4edf653fe07efe8f1ecc32d3d195abd16	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
File created	C:\Windows\WaaS\services\RuntimeBroker.exe	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid	Process
3016	schtasks.exe
1388	schtasks.exe
3132	schtasks.exe
4808	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exedllhost.exe

pid	Process
624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
4920	dllhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exedllhost.exe

description	pid	Process
Token: SeDebugPrivilege	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
Token: SeDebugPrivilege	4920	dllhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe

description	pid	Process	procid_target
PID 624 wrote to memory of 3016	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	85
PID 624 wrote to memory of 3016	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	85
PID 624 wrote to memory of 1388	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	87
PID 624 wrote to memory of 1388	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	87
PID 624 wrote to memory of 3132	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	89
PID 624 wrote to memory of 3132	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	89
PID 624 wrote to memory of 4808	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	91
PID 624 wrote to memory of 4808	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	91
PID 624 wrote to memory of 4920	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	94
PID 624 wrote to memory of 4920	624	adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3016
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "sppsvc" /sc ONLOGON /tr "'C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\308046B0AF4A39CB\sppsvc.exe'" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1388
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\Temp\adf5cb2ba4e13eba254adea54ee6855d_JaffaCakes118.exe'" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3132
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\AppxManifest\StartMenuExperienceHost.exe'" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4808
- C:\Recovery\WindowsRE\dllhost.exe
  "C:\Recovery\WindowsRE\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Recovery\WindowsRE\dllhost.exe

Filesize
768KB

MD5
adf5cb2ba4e13eba254adea54ee6855d

SHA1
00759c66c70ead273372cc31964f493105539704

SHA256
9d1cda19a05364d02903a407a68a85313dff6bf47a4f3b42e62d125a8bfae4b8

SHA512
c74b19c3be4bda23deb28ce880bf63751a2baa9cc8f15096187dab4c7a2bb2c01960b3e8baba364f076501fc6b9952932ccb4773d22c0ec4cd03fca54fd08ff7

Download Submit
memory/624-0-0x00007FFFD20B3000-0x00007FFFD20B5000-memory.dmp

Filesize
8KB

Download
memory/624-1-0x00000000003C0000-0x0000000000486000-memory.dmp

Filesize
792KB

Download
memory/624-2-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

Filesize
10.8MB

Download
memory/624-22-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads