dcrat | 708f1bcec066db275b751c43a2b92fe54ea5f82e33c61b0114a249476a9ad8d6

Analysis

max time kernel
132s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
30/10/2024, 01:09

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General

Target

RakBot.exe
Size

1.1MB
MD5

0a4bcbacfca9876e5914933a8481391e
SHA1

91876f816adca7cd5eace2b23134eac094ea78ae
SHA256

708f1bcec066db275b751c43a2b92fe54ea5f82e33c61b0114a249476a9ad8d6
SHA512

7b089c7c6c6f22015cda9d74b8fbfcd7c29fad97c1eb62b3af6c3ab4b0b6994a07e258795ede117b7fab6057fca3c34de1afde010b830a5cbffdc78d42a598f7
SSDEEP

24576:l9h9ghwRVQAOBdlSER9MysrYx4ltFbc+Dyd8oC:lr9k3lPLMJYxEv0C

Score

10^/10

dcrat discovery infostealer rat spyware stealer

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 4 IoCs

rat

resource	yara_rule
behavioral1/files/0x0009000000015d2a-20.dat	family_dcrat_v2
behavioral1/memory/1884-26-0x0000000000400000-0x00000000004E6000-memory.dmp	family_dcrat_v2
behavioral1/memory/2892-29-0x0000000000860000-0x0000000000910000-memory.dmp	family_dcrat_v2
behavioral1/memory/352-55-0x0000000001000000-0x00000000010B0000-memory.dmp	family_dcrat_v2

Executes dropped EXE 3 IoCs

pid	Process
2620	uqsXXXDdcd.exe
2892	WFlf9lRZU8.exe
352	csrss.exe

Loads dropped DLL 2 IoCs

pid	Process
1884	RakBot.exe
1884	RakBot.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1372 set thread context of 1884	1372	RakBot.exe	31

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\audiodg.exe	WFlf9lRZU8.exe
File created	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\VSTA\ItemTemplates\42af1c969fbb7b	WFlf9lRZU8.exe
File created	C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\csrss.exe	WFlf9lRZU8.exe
File created	C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\886983d96e3d3e	WFlf9lRZU8.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\Logs\HomeGroup\sppsvc.exe	WFlf9lRZU8.exe
File opened for modification	C:\Windows\Logs\HomeGroup\sppsvc.exe	WFlf9lRZU8.exe
File created	C:\Windows\Logs\HomeGroup\0a1fd5f707cd16	WFlf9lRZU8.exe
File created	C:\Windows\tracing\System.exe	WFlf9lRZU8.exe
File created	C:\Windows\tracing\27d1bcfc3c54e0	WFlf9lRZU8.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\audiodg.exe	WFlf9lRZU8.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\42af1c969fbb7b	WFlf9lRZU8.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 2 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	RakBot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RakBot.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
2892	WFlf9lRZU8.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe
352	csrss.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
352	csrss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	WFlf9lRZU8.exe
Token: SeDebugPrivilege	352	csrss.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1372 wrote to memory of 1884	1372	RakBot.exe	31
PID 1884 wrote to memory of 2892	1884	RakBot.exe	33
PID 1884 wrote to memory of 2892	1884	RakBot.exe	33
PID 1884 wrote to memory of 2892	1884	RakBot.exe	33
PID 1884 wrote to memory of 2892	1884	RakBot.exe	33
PID 2892 wrote to memory of 2144	2892	WFlf9lRZU8.exe	34
PID 2892 wrote to memory of 2144	2892	WFlf9lRZU8.exe	34
PID 2892 wrote to memory of 2144	2892	WFlf9lRZU8.exe	34
PID 2144 wrote to memory of 2720	2144	cmd.exe	36
PID 2144 wrote to memory of 2720	2144	cmd.exe	36
PID 2144 wrote to memory of 2720	2144	cmd.exe	36
PID 2144 wrote to memory of 3016	2144	cmd.exe	37
PID 2144 wrote to memory of 3016	2144	cmd.exe	37
PID 2144 wrote to memory of 3016	2144	cmd.exe	37
PID 2144 wrote to memory of 352	2144	cmd.exe	39
PID 2144 wrote to memory of 352	2144	cmd.exe	39
PID 2144 wrote to memory of 352	2144	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\RakBot.exe
"C:\Users\Admin\AppData\Local\Temp\RakBot.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Users\Admin\AppData\Local\Temp\RakBot.exe
  "C:\Users\Admin\AppData\Local\Temp\RakBot.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Users\Admin\AppData\Roaming\uqsXXXDdcd.exe
    "C:\Users\Admin\AppData\Roaming\uqsXXXDdcd.exe"
    3⤵
    - Executes dropped EXE
    PID:2620
- - C:\Users\Admin\AppData\Roaming\WFlf9lRZU8.exe
    "C:\Users\Admin\AppData\Roaming\WFlf9lRZU8.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2892
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\oBXqT6EGYX.bat"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2144
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:2720
    - - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        5⤵
        
        PID:3016
    - - C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\csrss.exe
        
        "C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\csrss.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        
        PID:352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\oBXqT6EGYX.bat

Filesize
238B

MD5
e5f7b003687f13e22b56801661a6aa80

SHA1
b75508d343a1a4b865be2c9b6822f5ed44a73f2f

SHA256
b9a2afe72913cad644debe3b2488c036fe8e885c010e87fb9b70aa4262f2a51d

SHA512
4cf6703bf002f8342510d01c9bf627bb8318c9a564d5489305b90f8d46bae4f30de32df6ffbb0d8536de7b3c598b87fa11b50a18ef350d58b622d0e2d7ec1ded

Download Submit
C:\Users\Admin\AppData\Roaming\uqsXXXDdcd.exe

Filesize
18KB

MD5
f3edff85de5fd002692d54a04bcb1c09

SHA1
4c844c5b0ee7cb230c9c28290d079143e00cb216

SHA256
caf29650446db3842e1c1e8e5e1bafadaf90fc82c5c37b9e2c75a089b7476131

SHA512
531d920e2567f58e8169afc786637c1a0f7b9b5c27b27b5f0eddbfc3e00cecd7bea597e34061d836647c5f8c7757f2fe02952a9793344e21b39ddd4bf7985f9d

Download Submit
\Users\Admin\AppData\Roaming\WFlf9lRZU8.exe

Filesize
674KB

MD5
1088e239e86c2316358d4e5b82810fa2

SHA1
5a16e420b1aa52c4dcd9f0bced05a59e679997a5

SHA256
0fa75c70f7304d35a4aed13dfe72793008610b429820ab8bc2ad45d3abd5e1b2

SHA512
2b79a3aca00ab269d1d8a1874bc0ce3ab06d18aa8c0d1af363f54b569e16e3a0c0fbf88ca4e76f5db3e2302e7d7b20a59bf6c76295c96179ded03c71060ac073

Download Submit
memory/352-55-0x0000000001000000-0x00000000010B0000-memory.dmp

Filesize
704KB

Download
memory/1372-0-0x0000000001225000-0x0000000001226000-memory.dmp

Filesize
4KB

Download
memory/1884-9-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-26-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1884-6-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-5-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-4-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-13-0x0000000001110000-0x000000000122C000-memory.dmp

Filesize
1.1MB

Download
memory/1884-12-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-3-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-11-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-2-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1884-1-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/2892-30-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2892-32-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/2892-34-0x0000000000450000-0x0000000000468000-memory.dmp

Filesize
96KB

Download
memory/2892-35-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2892-49-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2892-52-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2892-29-0x0000000000860000-0x0000000000910000-memory.dmp

Filesize
704KB

Download
memory/2892-28-0x000007FEF5FD3000-0x000007FEF5FD4000-memory.dmp

Filesize
4KB

Download