stealc | 91171af67f002002c7845dfc79d87ebdf86badd5c5f91727d00405d5638ab841

General

Target

c3108cefdf629f631dbba54af7124abc.exe
Size

420KB
MD5

c3108cefdf629f631dbba54af7124abc
SHA1

c9f7a200239da2e89ba8da6afae7fc87cf19537c
SHA256

91171af67f002002c7845dfc79d87ebdf86badd5c5f91727d00405d5638ab841
SHA512

5afcfff2041b4db85818097e453e6da7c1fb5e378688beeb50b06287b456fe82eee7020b38d37e03f9ee28383210e6a266f3ce86d07075bcf9467efd704ebb58
SSDEEP

6144:9tG76pKx44R/AdKguTHgQ5pe0stxs9D1Et7IqCARIICAblFC:54RuuTHgQ5+UZ1WCAmDM

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://92.255.57.89

Attributes

url_path
/45c616e921a794b8.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc
Downloads MZ/PE file

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	c3108cefdf629f631dbba54af7124abc.exe

Executes dropped EXE 1 IoCs

pid	Process
3888	C311.tmp.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2244	3888	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3108cefdf629f631dbba54af7124abc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	C311.tmp.exe

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	C311.tmp.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	C311.tmp.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3888	C311.tmp.exe
3888	C311.tmp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1788	c3108cefdf629f631dbba54af7124abc.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1788	c3108cefdf629f631dbba54af7124abc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 3888	1788	c3108cefdf629f631dbba54af7124abc.exe	87
PID 1788 wrote to memory of 3888	1788	c3108cefdf629f631dbba54af7124abc.exe	87
PID 1788 wrote to memory of 3888	1788	c3108cefdf629f631dbba54af7124abc.exe	87

C:\Users\Admin\AppData\Local\Temp\c3108cefdf629f631dbba54af7124abc.exe
"C:\Users\Admin\AppData\Local\Temp\c3108cefdf629f631dbba54af7124abc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Users\Admin\AppData\Local\Temp\C311.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\C311.tmp.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3888
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3888 -s 1040
    3⤵
    - Program crash
    PID:2244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3888 -ip 3888
1⤵
PID:4512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\C311.tmp.exe

Filesize
298KB

MD5
3e5fc816d18b06cefcb86a31ae9fe52e

SHA1
d8f337ca370a09992ad27220f144a6f20c372251

SHA256
1891f566c018182f1b5826b5fe2a05d6927aff15638d28c7cbe77ab11a366e12

SHA512
e14098a1574cea3610f5256d6f97c53f2d98b660ac6efdc16e207e4241bedc95ed209f9d2174142c52657f8fe2ce29797684a54fe2598fcca6706794d76b092a

Download Submit
memory/1788-1-0x00000000009A0000-0x0000000000AA0000-memory.dmp

Filesize
1024KB

Download
memory/1788-2-0x0000000002440000-0x00000000024A5000-memory.dmp

Filesize
404KB

Download
memory/1788-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1788-12-0x00000000009A0000-0x0000000000AA0000-memory.dmp

Filesize
1024KB

Download
memory/1788-16-0x0000000000400000-0x0000000000841000-memory.dmp

Filesize
4.3MB

Download
memory/1788-18-0x0000000002440000-0x00000000024A5000-memory.dmp

Filesize
404KB

Download
memory/1788-28-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1788-33-0x0000000000400000-0x0000000000841000-memory.dmp

Filesize
4.3MB

Download
memory/3888-30-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/3888-31-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/3888-32-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads