stealc | 7142024b96ed0fd9f6445788ae1aad3e3e61dc0af44b7564c5e55591256d22aa

General

Target

835c8f9de3c89466c3e4720d3a137580.exe
Size

188KB
MD5

835c8f9de3c89466c3e4720d3a137580
SHA1

176e7bdcfe666955053835130f0e02823096fe25
SHA256

7142024b96ed0fd9f6445788ae1aad3e3e61dc0af44b7564c5e55591256d22aa
SHA512

23c0da9ce25daa25cd943a3dbe2742269564b91ac31d926d6c635789bf889b4a15549034c127e75ad5dd884563171de4a2859a01b51d21792ff1ef35c4a4a9e6
SSDEEP

1536:7u24strs50yrezuIPCRP5jLQZ7fmJkgXse+e20I2SozNrcKXgct5MXhfDmP2JKgy:7vH5f2jLQNf1oz20I2SacyRMXZ6/c

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://givesc.link

Signatures

Detects Stealc stealer 1 IoCs

stealer

resource	yara_rule
behavioral1/memory/944-100-0x0000000000400000-0x0000000000628000-memory.dmp	family_stealc

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

Deletes itself 1 IoCs

pid	Process
1964	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
944	835c8f9de3c89466c3e4720d3a137580.exe
944	835c8f9de3c89466c3e4720d3a137580.exe

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

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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). Likely ransomware behaviour.

System Information Discovery
T1082

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	835c8f9de3c89466c3e4720d3a137580.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	835c8f9de3c89466c3e4720d3a137580.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1040	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
944	835c8f9de3c89466c3e4720d3a137580.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 1964	944	835c8f9de3c89466c3e4720d3a137580.exe	29
PID 944 wrote to memory of 1964	944	835c8f9de3c89466c3e4720d3a137580.exe	29
PID 944 wrote to memory of 1964	944	835c8f9de3c89466c3e4720d3a137580.exe	29
PID 944 wrote to memory of 1964	944	835c8f9de3c89466c3e4720d3a137580.exe	29
PID 1964 wrote to memory of 1040	1964	cmd.exe	31
PID 1964 wrote to memory of 1040	1964	cmd.exe	31
PID 1964 wrote to memory of 1040	1964	cmd.exe	31
PID 1964 wrote to memory of 1040	1964	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\835c8f9de3c89466c3e4720d3a137580.exe
"C:\Users\Admin\AppData\Local\Temp\835c8f9de3c89466c3e4720d3a137580.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\835c8f9de3c89466c3e4720d3a137580.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/944-55-0x00000000002B0000-0x00000000002C5000-memory.dmp

Filesize
84KB

Download
memory/944-56-0x0000000000400000-0x0000000000628000-memory.dmp

Filesize
2.2MB

Download
memory/944-58-0x0000000000400000-0x0000000000628000-memory.dmp

Filesize
2.2MB

Download
memory/944-60-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/944-100-0x0000000000400000-0x0000000000628000-memory.dmp

Filesize
2.2MB

Download
memory/944-119-0x0000000000400000-0x0000000000628000-memory.dmp

Filesize
2.2MB

Download
memory/944-130-0x0000000000400000-0x0000000000628000-memory.dmp

Filesize
2.2MB

Download

Analysis

Sharing