stealc | c0d4f11f46c6d39aec1956a0703d1af2f0cfef9becffc8c73be712558dbbdf21

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
23/08/2023, 01:01

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General

Target
11e729cd1e6de25193da2e284a4a4d76.exe
Size 270KB
Sample230823-bc8fjaac2s
SHA256 c0d4f11f46c6d39aec1956a0703d1af2f0cfef9becffc8c73be712558dbbdf21
MD5 11e729cd1e6de25193da2e284a4a4d76
SHA1 56f50eb3bb49e1fb9c1d0729b05155dfe5a0b1a9
SHA512 48bde07aa47f443d707d1fce5c4c4ef586baa2b0ad65064ef7fea7c50d92b65f6e696d273bf7cb8361e5dd4fc882502992acfbaaa0fb63d6e73ddb5bc94e2f31
SSDEEP 3072:gBjjjG6ewR5iRIq9cg77n3Xvpmd9i+566KV2waIcDo+nkygY2lKQRvvTNfBC2mD:mjSwPq2Onvp69R5rWabpnt2pxNfB/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc spyware stealer

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
2760	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2268	11e729cd1e6de25193da2e284a4a4d76.exe
2268	11e729cd1e6de25193da2e284a4a4d76.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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2784	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2268	11e729cd1e6de25193da2e284a4a4d76.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2760	2268	11e729cd1e6de25193da2e284a4a4d76.exe	31
PID 2268 wrote to memory of 2760	2268	11e729cd1e6de25193da2e284a4a4d76.exe	31
PID 2268 wrote to memory of 2760	2268	11e729cd1e6de25193da2e284a4a4d76.exe	31
PID 2268 wrote to memory of 2760	2268	11e729cd1e6de25193da2e284a4a4d76.exe	31
PID 2760 wrote to memory of 2784	2760	cmd.exe	33
PID 2760 wrote to memory of 2784	2760	cmd.exe	33
PID 2760 wrote to memory of 2784	2760	cmd.exe	33
PID 2760 wrote to memory of 2784	2760	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\11e729cd1e6de25193da2e284a4a4d76.exe
"C:\Users\Admin\AppData\Local\Temp\11e729cd1e6de25193da2e284a4a4d76.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\11e729cd1e6de25193da2e284a4a4d76.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mozglue.dll

Path \ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path \ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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memory/2268-55-0x0000000002480000-0x0000000002580000-memory.dmp

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memory/2268-56-0x0000000000220000-0x000000000023B000-memory.dmp

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memory/2268-57-0x0000000000400000-0x00000000022EC000-memory.dmp

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memory/2268-58-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/2268-104-0x0000000002480000-0x0000000002580000-memory.dmp

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memory/2268-114-0x0000000000220000-0x000000000023B000-memory.dmp

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memory/2268-119-0x0000000000400000-0x00000000022EC000-memory.dmp

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memory/2268-123-0x0000000000400000-0x00000000022EC000-memory.dmp

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memory/2268-133-0x0000000000400000-0x00000000022EC000-memory.dmp

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memory/2268-134-0x0000000002480000-0x0000000002580000-memory.dmp

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