bfc9cf8ef1369ba05191e708fea5b6c71d653dee922f15a53a7aed0642e1b756

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
13/01/2023, 13:45

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General

Target
BL-SHIPPING DOCUMENTS.exe
Size 432KB
Sample230113-q2d1jsda41
SHA256 bfc9cf8ef1369ba05191e708fea5b6c71d653dee922f15a53a7aed0642e1b756
MD5 e5b9ff03ba8b7a364c7a60278f1304dc
SHA1 54cb88389f46376aaffea1ba9064827453ac5b97
SHA512 d23c679316f6bf9f4202ec039a3d16735ac07922afae0d4a3d0b77a55ea7ba4bec4eb2554dfd3b88aa5499288d972ce7071ede638c5688ce02ff6d8be3ef1a15
SSDEEP 6144:IYa66T0lgP18cWoTGJTIjl0pjYGEWfGQRdNz4AGNKGC:IYQT0lgP18yTqTIjl0ClWuQ5LiKn
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
544	btctgxoty.exe
4568	btctgxoty.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	btctgxoty.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 544 set thread context of 4568	544	btctgxoty.exe	82
PID 4568 set thread context of 3092	4568	btctgxoty.exe	46
PID 4592 set thread context of 3092	4592	chkdsk.exe	46

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4172	3456	WerFault.exe	90

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3092	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
544	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4568	btctgxoty.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe
4592	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4568	btctgxoty.exe
Token: SeDebugPrivilege	4592	chkdsk.exe
Token: SeShutdownPrivilege	3092	Explorer.EXE
Token: SeCreatePagefilePrivilege	3092	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 544	5076	BL-SHIPPING DOCUMENTS.exe	81
PID 5076 wrote to memory of 544	5076	BL-SHIPPING DOCUMENTS.exe	81
PID 5076 wrote to memory of 544	5076	BL-SHIPPING DOCUMENTS.exe	81
PID 544 wrote to memory of 4568	544	btctgxoty.exe	82
PID 544 wrote to memory of 4568	544	btctgxoty.exe	82
PID 544 wrote to memory of 4568	544	btctgxoty.exe	82
PID 544 wrote to memory of 4568	544	btctgxoty.exe	82
PID 3092 wrote to memory of 4592	3092	Explorer.EXE	83
PID 3092 wrote to memory of 4592	3092	Explorer.EXE	83
PID 3092 wrote to memory of 4592	3092	Explorer.EXE	83
PID 4592 wrote to memory of 3456	4592	chkdsk.exe	90
PID 4592 wrote to memory of 3456	4592	chkdsk.exe	90
PID 4592 wrote to memory of 3456	4592	chkdsk.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Users\Admin\AppData\Local\Temp\BL-SHIPPING DOCUMENTS.exe
  "C:\Users\Admin\AppData\Local\Temp\BL-SHIPPING DOCUMENTS.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe
    "C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe" C:\Users\Admin\AppData\Local\Temp\yyoaogav.oys
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:544
  - - C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe
      "C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4568
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4592
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:3456
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3456 -s 192
      4⤵
      Program crash
      PID:4172

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 472 -p 3456 -ip 3456
1⤵
PID:1488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

btctgxoty.exe

Path C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe
Size 48KB
SHA256 1d716a3596e754a662c851da4b6a55cbe0e0366b2fc0148517115a573e0557db
MD5 f502a0304d67539f6af53cebaad5ef0e
SHA1 f758a2a43346d59fece781e7a11eb86a859b92a3
SHA512 cc0e638e0ae8757e35789920ade17500ad941612c332546de65de577830c4573ae5723810b78bcca9fe952be3b9691ff66182873618c7ec57d26d1a9c4c4f9a4
SSDEEP 768:BLZPrq5ePvgHTzqapK2ShdCQZsn+Yipkh5eEMP6qED7uXn3jXUeKvvvvvvvv:NpNQaaA1d1s+Yf5dMPCu3r
MD5 SHA1 SHA512 SSDEEP

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btctgxoty.exe

Path C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe
Size 48KB
SHA256 1d716a3596e754a662c851da4b6a55cbe0e0366b2fc0148517115a573e0557db
MD5 f502a0304d67539f6af53cebaad5ef0e
SHA1 f758a2a43346d59fece781e7a11eb86a859b92a3
SHA512 cc0e638e0ae8757e35789920ade17500ad941612c332546de65de577830c4573ae5723810b78bcca9fe952be3b9691ff66182873618c7ec57d26d1a9c4c4f9a4
SSDEEP 768:BLZPrq5ePvgHTzqapK2ShdCQZsn+Yipkh5eEMP6qED7uXn3jXUeKvvvvvvvv:NpNQaaA1d1s+Yf5dMPCu3r
MD5 SHA1 SHA512 SSDEEP

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btctgxoty.exe

Path C:\Users\Admin\AppData\Local\Temp\btctgxoty.exe
Size 48KB
SHA256 1d716a3596e754a662c851da4b6a55cbe0e0366b2fc0148517115a573e0557db
MD5 f502a0304d67539f6af53cebaad5ef0e
SHA1 f758a2a43346d59fece781e7a11eb86a859b92a3
SHA512 cc0e638e0ae8757e35789920ade17500ad941612c332546de65de577830c4573ae5723810b78bcca9fe952be3b9691ff66182873618c7ec57d26d1a9c4c4f9a4
SSDEEP 768:BLZPrq5ePvgHTzqapK2ShdCQZsn+Yipkh5eEMP6qED7uXn3jXUeKvvvvvvvv:NpNQaaA1d1s+Yf5dMPCu3r
MD5 SHA1 SHA512 SSDEEP

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nwafw.uhq

Path C:\Users\Admin\AppData\Local\Temp\nwafw.uhq
Size 205KB
SHA256 6cf85a3d3c244a0bc5d53b9c57b9375f6f0d2ec0b834f350219cbad8f244a95e
MD5 e172458e327ff979aa0b16e6e98eece4
SHA1 0e94288c781166f2a1db8de1ed44ddb077c804f0
SHA512 769c442d6a4d22f242c5e22d96fc2e9f330a164e1f046f9fc5f37c79f673bbb35b450a98ac2731b7a7480092665d636035721cb42982136d40b69ee0f5747173
SSDEEP 3072:WiZqJIY4v5/1zLw9shCf1lZBQkZu/gEhG6DotzVOE/L4rIMsAf:WcgIY4X0P1lTQkQhGkgVOE/L4yAf
MD5 SHA1 SHA512 SSDEEP

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yyoaogav.oys

Path C:\Users\Admin\AppData\Local\Temp\yyoaogav.oys
Size 5KB
SHA256 cd2dbb349482905cb44978fbd4e9902f99e64bb0af3c850ad8bf2566073b1e3e
MD5 2db00fa7afb3de8e63a152ee88966fae
SHA1 d65b6da2bf9290f2f0db447a17df469743cf53c7
SHA512 67ecdfb09864d7e59f988b2b6b17186619750916e1191106cea9519973c5a8ea5f34814a9952e0cf16fa2b062e4beb41e09cc150b105b54f0be507db8c364231
SSDEEP 96:Farc6oYZg/DrYuXk2XO5oSw0wyDSdCEK3jSIx+TggO2FwIFcH8m6t+McoQil3:FarcRVfhX1SJ7DuhIxrgX1ccmSBQiF
MD5 SHA1 SHA512 SSDEEP

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memory/3092-142-0x0000000007DE0000-0x0000000007EC3000-memory.dmp

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memory/3092-150-0x0000000007ED0000-0x0000000007FA5000-memory.dmp

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memory/3092-148-0x0000000007ED0000-0x0000000007FA5000-memory.dmp

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memory/4568-140-0x0000000000AA0000-0x0000000000DEA000-memory.dmp

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memory/4568-141-0x00000000005A0000-0x00000000005B0000-memory.dmp

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memory/4568-139-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/4592-145-0x0000000000A70000-0x0000000000A9D000-memory.dmp

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memory/4592-144-0x0000000000B50000-0x0000000000B5A000-memory.dmp

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memory/4592-146-0x00000000013C0000-0x000000000170A000-memory.dmp

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memory/4592-147-0x0000000001250000-0x00000000012DF000-memory.dmp

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memory/4592-149-0x0000000000A70000-0x0000000000A9D000-memory.dmp

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