blackguard | c67b6f45d0beb461838f87ca2ad4774b52d7ccf9b0fa36652e8642dc72f43302

General

Target

tmp.exe
Size

115KB
MD5

bfaa027a645e567824a10a26fb8dbefd
SHA1

4ab52a0b1cc105a5462c2255ef84be9af431b82e
SHA256

c67b6f45d0beb461838f87ca2ad4774b52d7ccf9b0fa36652e8642dc72f43302
SHA512

2f7ab0e4451cfeec017ba294cfcbc6f02d85c756bebce1cf9b3c69f6c77386fe9a21897734c44f4aa32dcaf3a1b7fbaaf0c4639edab1c8961761767a656b4569
SSDEEP

1536:ztCbuEYE+9z2wpuFavGmhMnDIhzZtz20tnh/:5CbuAsEFNmhMnDIhNI0tnh/

Score

10^/10

blackguard persistence stealer

Malware Config

Extracted

Family

blackguard

C2

http://94.142.138.111

Signatures

BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
228	dtsmsys.exe

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-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\flWyfUU = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dtsmsys.exe\""	dtsmsys.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
24	ip-api.com

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key deleted	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open\command	dtsmsys.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell	dtsmsys.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings	dtsmsys.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open\command	dtsmsys.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings	dtsmsys.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell	dtsmsys.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open	dtsmsys.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open\command\ = "powershell.exe -command Add-MpPreference -ExclusionPath C:\\"	dtsmsys.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open\command\DelegateExecute	dtsmsys.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\ms-settings\Shell\Open	dtsmsys.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
228	dtsmsys.exe
228	dtsmsys.exe
4888	PowerShell.exe
4888	PowerShell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	tmp.exe
Token: SeDebugPrivilege	228	dtsmsys.exe
Token: SeDebugPrivilege	4888	PowerShell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 228	1204	tmp.exe	89
PID 1204 wrote to memory of 228	1204	tmp.exe	89
PID 228 wrote to memory of 4696	228	dtsmsys.exe	91
PID 228 wrote to memory of 4696	228	dtsmsys.exe	91
PID 4696 wrote to memory of 4888	4696	fodhelper.exe	92
PID 4696 wrote to memory of 4888	4696	fodhelper.exe	92

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\dtsmsys.exe
  "C:\Users\Admin\AppData\Local\Temp\dtsmsys.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\System32\fodhelper.exe
    "C:\Windows\System32\fodhelper.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4696
  - - C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
      "PowerShell.exe" -command Add-MpPreference -ExclusionPath C:\
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r3rd3amx.fr3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
3.4MB

MD5
e695b8888af3b57f1a56961bd289463c

SHA1
e8c3892fcf4635a16fe91b9542953e2ac5141df2

SHA256
c5a45793d7c361f18d36c190b86c951bf0e7a01ad52132c7e9e9d4101eff73aa

SHA512
3c1ba39b7819020ad748bfd8bc0cca01fda5e5c7a2111ec6c034bf99e1974f27cb6a1ad7b3e26ffcfb150c447349661771fd21d54c25602ab01c1b1b43346ce1

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

Filesize
3.4MB

MD5
e695b8888af3b57f1a56961bd289463c

SHA1
e8c3892fcf4635a16fe91b9542953e2ac5141df2

SHA256
c5a45793d7c361f18d36c190b86c951bf0e7a01ad52132c7e9e9d4101eff73aa

SHA512
3c1ba39b7819020ad748bfd8bc0cca01fda5e5c7a2111ec6c034bf99e1974f27cb6a1ad7b3e26ffcfb150c447349661771fd21d54c25602ab01c1b1b43346ce1

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

Filesize
3.4MB

MD5
e695b8888af3b57f1a56961bd289463c

SHA1
e8c3892fcf4635a16fe91b9542953e2ac5141df2

SHA256
c5a45793d7c361f18d36c190b86c951bf0e7a01ad52132c7e9e9d4101eff73aa

SHA512
3c1ba39b7819020ad748bfd8bc0cca01fda5e5c7a2111ec6c034bf99e1974f27cb6a1ad7b3e26ffcfb150c447349661771fd21d54c25602ab01c1b1b43346ce1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF9A3.tmp

Filesize
20KB

MD5
49693267e0adbcd119f9f5e02adf3a80

SHA1
3ba3d7f89b8ad195ca82c92737e960e1f2b349df

SHA256
d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f

SHA512
b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

Download Submit
memory/228-154-0x0000019A46520000-0x0000019A46542000-memory.dmp

Filesize
136KB

Download
memory/228-186-0x0000019A2C140000-0x0000019A2C150000-memory.dmp

Filesize
64KB

Download
memory/228-177-0x0000019A47130000-0x0000019A47658000-memory.dmp

Filesize
5.2MB

Download
memory/228-185-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/228-151-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/228-152-0x0000019A2BA30000-0x0000019A2BD7A000-memory.dmp

Filesize
3.3MB

Download
memory/228-153-0x0000019A2C140000-0x0000019A2C150000-memory.dmp

Filesize
64KB

Download
memory/228-174-0x0000019A46A30000-0x0000019A46BF2000-memory.dmp

Filesize
1.8MB

Download
memory/1204-135-0x0000017022570000-0x0000017022580000-memory.dmp

Filesize
64KB

Download
memory/1204-138-0x0000017022570000-0x0000017022580000-memory.dmp

Filesize
64KB

Download
memory/1204-133-0x0000017020990000-0x00000170209AA000-memory.dmp

Filesize
104KB

Download
memory/1204-150-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/1204-134-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/1204-137-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/4888-166-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/4888-170-0x000001E7F47B0000-0x000001E7F47C0000-memory.dmp

Filesize
64KB

Download
memory/4888-178-0x00007FFA0D950000-0x00007FFA0E411000-memory.dmp

Filesize
10.8MB

Download
memory/4888-168-0x000001E7F47B0000-0x000001E7F47C0000-memory.dmp

Filesize
64KB

Download
memory/4888-169-0x000001E7F47B0000-0x000001E7F47C0000-memory.dmp

Filesize
64KB

Download
memory/4888-167-0x000001E7F47B0000-0x000001E7F47C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads