ec4f62108a0efc101539e57198ffffaac7be084e792b43daeb4561881c0fc2f2

General

Target

76BVN200706awbinformation_PDF.exe
Size

5.1MB
MD5

1082b9039a4b9fafd5d6c40663bed8a2
SHA1

7f9a433442b492d6860dcab52b4aa83bfb495222
SHA256

ec4f62108a0efc101539e57198ffffaac7be084e792b43daeb4561881c0fc2f2
SHA512

dfdade40ac974165dbff9e0d40be375416a7116f13e6769d366452d352562dcee65a1c7c0bf894e405d9e83a355fdcb7171b0525aaac6c4733d3eb4695efbc41

Score

8^/10

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1756 set thread context of 1300	1756	vgbuild.exe	30

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\gvbuild = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\vgbuild.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	76BVN200706awbinformation_PDF.exe
Token: SeDebugPrivilege	1756	vgbuild.exe
Token: SeDebugPrivilege	1300	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1400	76BVN200706awbinformation_PDF.exe
1400	76BVN200706awbinformation_PDF.exe
1400	76BVN200706awbinformation_PDF.exe
1756	vgbuild.exe
1756	vgbuild.exe
1756	vgbuild.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 1032	1400	76BVN200706awbinformation_PDF.exe	24
PID 1400 wrote to memory of 1032	1400	76BVN200706awbinformation_PDF.exe	24
PID 1400 wrote to memory of 1032	1400	76BVN200706awbinformation_PDF.exe	24
PID 1400 wrote to memory of 1032	1400	76BVN200706awbinformation_PDF.exe	24
PID 1032 wrote to memory of 784	1032	cmd.exe	26
PID 1032 wrote to memory of 784	1032	cmd.exe	26
PID 1032 wrote to memory of 784	1032	cmd.exe	26
PID 1032 wrote to memory of 784	1032	cmd.exe	26
PID 1400 wrote to memory of 1756	1400	76BVN200706awbinformation_PDF.exe	29
PID 1400 wrote to memory of 1756	1400	76BVN200706awbinformation_PDF.exe	29
PID 1400 wrote to memory of 1756	1400	76BVN200706awbinformation_PDF.exe	29
PID 1400 wrote to memory of 1756	1400	76BVN200706awbinformation_PDF.exe	29
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30
PID 1756 wrote to memory of 1300	1756	vgbuild.exe	30

Loads dropped DLL 2 IoCs

pid	Process
1400	76BVN200706awbinformation_PDF.exe
1756	vgbuild.exe

Executes dropped EXE 2 IoCs

pid	Process
1756	vgbuild.exe
1300	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\76BVN200706awbinformation_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\76BVN200706awbinformation_PDF.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
PID:1400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v gvbuild /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\vgbuild.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v gvbuild /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\vgbuild.exe"
    3⤵
    - Adds Run entry to start application
    PID:784
- C:\Users\Admin\AppData\Roaming\vgbuild.exe
  "C:\Users\Admin\AppData\Roaming\vgbuild.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Loads dropped DLL
  - Executes dropped EXE
  PID:1756
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Executes dropped EXE
    PID:1300

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1300-17-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1300-18-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing