stealc | f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b

General

Target

f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe
Size

5.3MB
MD5

4eda5246e489dfa5edadc1a46221b9b6
SHA1

5d11b441365ea64090f34c68b4cf47b9d2d701dc
SHA256

f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b
SHA512

783b801030b15b53633509ed36c815d928a67e9c833d2c8a2cc368fda8a5b76386c34ca767636d0fd3d0262ee059af89784324701eac46f4867f8ea9e74f4625
SSDEEP

49152:Kh8VUIicvXIXj97Nf50oyGRUxhtIHsWZsn+We5l7BGthQ3QTNxGSr+GiM+t2aVo/:Kh8VUIi4XIp7Nh0asO5JoHt7XXA2psO

Score

10^/10

stealc zgrat rat stealer

Malware Config

Extracted

Family

stealc

C2

http://94.156.8.100

Attributes

url_path
/5dce321003e6a6b5.php

Signatures

Detect ZGRat V1 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4052-1-0x00000000006A0000-0x0000000000BF4000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Downloads MZ/PE file

Loads dropped DLL 1 IoCs

Processes:

f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe

pid	Process
4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe

description	pid	Process	procid_target
PID 4052 set thread context of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
1004	4052	WerFault.exe	86

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

MsBuild.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MsBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MsBuild.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MsBuild.exe

pid	Process
1904	MsBuild.exe
1904	MsBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe

description	pid	Process	procid_target
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98
PID 4052 wrote to memory of 1904	4052	f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe	98

C:\Users\Admin\AppData\Local\Temp\f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe
"C:\Users\Admin\AppData\Local\Temp\f141b5eee77d2391f8ff169914873e1219c2b47ebfde2b5bdfc0af7c6e08217b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4052 -s 1032
  2⤵
  - Program crash
  PID:1004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4052 -ip 4052
1⤵
PID:5108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Protect544cd51a.dll

Filesize
398KB

MD5
2fd1be65bb613abd01f919fa509221a2

SHA1
4b43c83ad6b5c8dfd8547307a3bc0c842dd17ce1

SHA256
1b0858e50cd9915e1bfe621cf769e01a0c77966a4508bad7ebf4e0c348a95e25

SHA512
c7dc318fff152d921c23f587d17f15e90c635cddf167288132831f97b50c4bdfe81afceccf6768b9e07ec526eeada0765ec9bda970b93e802b53f808e3f6cd0f

Download Submit
memory/1904-71-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1904-29-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1904-27-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1904-26-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1904-23-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4052-16-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-19-0x0000000007AE0000-0x0000000007BE0000-memory.dmp

Filesize
1024KB

Download
memory/4052-8-0x0000000005AF0000-0x0000000005B02000-memory.dmp

Filesize
72KB

Download
memory/4052-9-0x00000000075B0000-0x0000000007742000-memory.dmp

Filesize
1.6MB

Download
memory/4052-6-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-15-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-0-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4052-17-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

Filesize
64KB

Download
memory/4052-18-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-7-0x0000000006230000-0x000000000646C000-memory.dmp

Filesize
2.2MB

Download
memory/4052-20-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-21-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-22-0x0000000007AE0000-0x0000000007BE0000-memory.dmp

Filesize
1024KB

Download
memory/4052-5-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4052-4-0x0000000005D00000-0x000000000622C000-memory.dmp

Filesize
5.2MB

Download
memory/4052-2-0x00000000055F0000-0x000000000568C000-memory.dmp

Filesize
624KB

Download
memory/4052-28-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4052-3-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4052-1-0x00000000006A0000-0x0000000000BF4000-memory.dmp

Filesize
5.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads