be90083aacdd2a3bba483b56ae5b3261317add57233873f86f037aeb3428e662

General

Target

tracker.doc
Size

211KB
MD5

9c78815dce144b8ee97f952d3e8c106b
SHA1

2c4b4d224c4577a5c513baaa9318b5b2d962b483
SHA256

be90083aacdd2a3bba483b56ae5b3261317add57233873f86f037aeb3428e662
SHA512

740f258ff43f821e37dc6ea8fae043d4894cfb5fc6a2c798f89899629a5c61320cc84ba75be0efdb106e3dae181cbecd51522360a8f236ca486da69602ecb565

Score

8^/10

Malware Config

Signatures

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1164	WINWORD.EXE
1164	WINWORD.EXE
1788	pwininilog.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	pwininilog.exe

Blacklisted process makes network request 1 IoCs

flow	pid	Process
5	1424	EQNEDT32.EXE

Executes dropped EXE 2 IoCs

pid	Process
1536	pwininilog.exe
1788	pwininilog.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1536 set thread context of 1788	1536	pwininilog.exe	29

Office loads VBA resources, possible macro or embedded object present
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1424	EQNEDT32.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 1536	1424	EQNEDT32.EXE	27
PID 1424 wrote to memory of 1536	1424	EQNEDT32.EXE	27
PID 1424 wrote to memory of 1536	1424	EQNEDT32.EXE	27
PID 1424 wrote to memory of 1536	1424	EQNEDT32.EXE	27
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29
PID 1536 wrote to memory of 1788	1536	pwininilog.exe	29

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1788	pwininilog.exe
1788	pwininilog.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\nVTlJn = "C:\\Users\\Admin\\AppData\\Roaming\\nVTlJn\\nVTlJn.exe"	pwininilog.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1164	WINWORD.EXE

Loads dropped DLL 2 IoCs

pid	Process
1424	EQNEDT32.EXE
1536	pwininilog.exe

C:\Program Files\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\tracker.doc"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:1164

C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blacklisted process makes network request
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
PID:1424
- C:\Users\Admin\AppData\Local\Temp\pwininilog.exe
  C:\Users\Admin\AppData\Local\Temp\pwininilog.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  - Loads dropped DLL
  PID:1536
- - C:\Users\Admin\AppData\Local\Temp\pwininilog.exe
    "{path}"
    3⤵
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of AdjustPrivilegeToken
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Adds Run entry to start application
    PID:1788

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1788-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1788-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1788-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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