metastealer | 42fbb2437faf68bae5c5877bed4d257e14788ff81f670926e1d4bbe731e7981b

General

Target

42fbb2437faf68bae5c5877bed4d257e14788ff81f670926e1d4bbe731e7981b.doc
Size

577KB
MD5

66f4f1384105ce7ee1636d34f2afb1c9
SHA1

3f23d152cc7badf728dfd60f6baa5c861a500630
SHA256

42fbb2437faf68bae5c5877bed4d257e14788ff81f670926e1d4bbe731e7981b
SHA512

d854b736f4f5e21db59b784e18e08e6047c601946b80da26fea019ef3725ee8cf85f99fecfd05dc70dac295e38a55609593ce7ad9a16332713c6d0257f922368

Score

10^/10

metastealer stealer

Malware Config

Signatures

Meta Stealer Stealer
Meta Stealer steals passwords stored in browsers, written in C++.
stealer metastealer

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	2560	5068	cmd.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	328	5068	cmd.exe	78

Executes dropped EXE 1 IoCs

pid	Process
4396	Sign.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
5068	WINWORD.EXE
5068	WINWORD.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

pid	Process
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE
5068	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 2560	5068	WINWORD.EXE	79
PID 5068 wrote to memory of 2560	5068	WINWORD.EXE	79
PID 2560 wrote to memory of 1740	2560	cmd.exe	81
PID 2560 wrote to memory of 1740	2560	cmd.exe	81
PID 5068 wrote to memory of 328	5068	WINWORD.EXE	82
PID 5068 wrote to memory of 328	5068	WINWORD.EXE	82
PID 328 wrote to memory of 4396	328	cmd.exe	84
PID 328 wrote to memory of 4396	328	cmd.exe	84

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\42fbb2437faf68bae5c5877bed4d257e14788ff81f670926e1d4bbe731e7981b.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c certutil -decode C:\Users\Admin\AppData\Local\Temp\\Signature.crt C:\Users\Admin\AppData\Local\Temp\\Sign.exe
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:2560
- - C:\Windows\system32\certutil.exe
    certutil -decode C:\Users\Admin\AppData\Local\Temp\\Signature.crt C:\Users\Admin\AppData\Local\Temp\\Sign.exe
    3⤵
    PID:1740
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c C:\Users\Admin\AppData\Local\Temp\\Sign.exe
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:328
- - C:\Users\Admin\AppData\Local\Temp\Sign.exe
    C:\Users\Admin\AppData\Local\Temp\\Sign.exe
    3⤵
    - Executes dropped EXE
    PID:4396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Sign.exe

Filesize
113KB

MD5
3cd5fa46507657f723719b7809d2d1f9

SHA1
34ddc14b9a04eba98c3aa1cb27033e12ec847e03

SHA256
a6dbc36c472b3ba70a98efd0db35e75c340086be15d3c3ab4e39033604d0bcf9

SHA512
c589f7628f5ac5db570564abd65a26d6b67467b3064abc08a9e352eeda8bc2e28ea7d1c02e15a145d77ec3aae7ecc1890a999df8bbdf0645c05ccfb41acd2442

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

Filesize
113KB

MD5
3cd5fa46507657f723719b7809d2d1f9

SHA1
34ddc14b9a04eba98c3aa1cb27033e12ec847e03

SHA256
a6dbc36c472b3ba70a98efd0db35e75c340086be15d3c3ab4e39033604d0bcf9

SHA512
c589f7628f5ac5db570564abd65a26d6b67467b3064abc08a9e352eeda8bc2e28ea7d1c02e15a145d77ec3aae7ecc1890a999df8bbdf0645c05ccfb41acd2442

Download Submit
C:\Users\Admin\AppData\Local\Temp\Signature.crt

Filesize
301KB

MD5
5e152c07eeecd3ac87ab006512995335

SHA1
2d6e81becabd69ef59b15daf63616011ace87540

SHA256
f2de986d091c3d27fb083ab124cdd437275afc287da1aa83a62f391f3f6b56f7

SHA512
2deb4c5ea8dbf5e77b0c2d3af3e75d985f585ea435a5da9ce83ad710e44c81f424027de09c13c207d8cd0a6e3467e474f1df360efd11245b1207d796a618cb9c

Download Submit
memory/4396-148-0x00000000007A0000-0x00000000007B0000-memory.dmp

Filesize
64KB

Download
memory/4396-143-0x00007FF8329B0000-0x00007FF833471000-memory.dmp

Filesize
10.8MB

Download
memory/4396-144-0x000000001ACE0000-0x000000001ACE2000-memory.dmp

Filesize
8KB

Download
memory/4396-145-0x0000000002060000-0x0000000002086000-memory.dmp

Filesize
152KB

Download
memory/4396-147-0x000000001B5C0000-0x000000001BAE8000-memory.dmp

Filesize
5.2MB

Download
memory/4396-142-0x0000000000010000-0x0000000000032000-memory.dmp

Filesize
136KB

Download
memory/4396-146-0x000000001AEC0000-0x000000001B082000-memory.dmp

Filesize
1.8MB

Download
memory/5068-132-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-134-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-133-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-131-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-130-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-150-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-149-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-151-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download
memory/5068-152-0x00007FF81D730000-0x00007FF81D740000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads