stealc | 8cb7719f28789df2af73a81bbf5fe00d87426027017ba46b82f4a4b873145cdc

General

Target

22d74e0f424ca022928d88b805155197.exe
Size

19.8MB
MD5

22d74e0f424ca022928d88b805155197
SHA1

b87f90a2391f32ba59e30a3d5ef5ebccf293ae98
SHA256

8cb7719f28789df2af73a81bbf5fe00d87426027017ba46b82f4a4b873145cdc
SHA512

2135178556ea4001e2e987965672a8f16c1581071a04bccddc9e622d1286acad9fa7ae0f4d73a35a2295ec5b7f26654514453075d7139daece41dddf7d89c870
SSDEEP

196608:Cpq/yip0b1ASmn4sD/W1otjRUQfM6nUcThbk:CLiC2SQ/AWNh8cThbk

Score

10^/10

stealc default credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://154.216.18.13

Attributes

url_path
/1a6bc231b835769a.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4472	BitLockerToGo.exe
4472	BitLockerToGo.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1220 set thread context of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89

System Location Discovery: System Language Discovery 1 TTPs 4 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	BitLockerToGo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	22d74e0f424ca022928d88b805155197.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	BitLockerToGo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	BitLockerToGo.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1128	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4472	BitLockerToGo.exe
4472	BitLockerToGo.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 1220 wrote to memory of 4472	1220	22d74e0f424ca022928d88b805155197.exe	89
PID 4472 wrote to memory of 4392	4472	BitLockerToGo.exe	90
PID 4472 wrote to memory of 4392	4472	BitLockerToGo.exe	90
PID 4472 wrote to memory of 4392	4472	BitLockerToGo.exe	90
PID 4392 wrote to memory of 1128	4392	cmd.exe	92
PID 4392 wrote to memory of 1128	4392	cmd.exe	92
PID 4392 wrote to memory of 1128	4392	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\22d74e0f424ca022928d88b805155197.exe
"C:\Users\Admin\AppData\Local\Temp\22d74e0f424ca022928d88b805155197.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4392
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/4472-0-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4472-1-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4472-2-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4472-3-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4472-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4472-55-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4472-75-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download

Analysis

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