stealc | 508636b6c60753fad23295328180bf3b2c003437fdabc24a84f6d283fd3d96fa

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
23/08/2023, 08:36

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General

Target

af6612aac93dcf264f6875cd9538db8c.exe
Size

275KB
MD5

af6612aac93dcf264f6875cd9538db8c
SHA1

0e42589130d32a4ec99b51b5567fdb77b5e34fb2
SHA256

508636b6c60753fad23295328180bf3b2c003437fdabc24a84f6d283fd3d96fa
SHA512

695a020d726a92615141d440651ec8cf0ca7b597a7fdd64949ccea621c7fa0f8e9c7ca50aa6e09e00dc4000165569c36e8f4258e49481690dae8dcb0222d71cc
SSDEEP

3072:0Xj0ygSjEI3LDoHy+irUs7SFMTmdlKIexIhnYqyii5/Z9BQZ:w0I3LES+iws7Q0CwxIOqdoZ9Bw

Score

10^/10

stealc spyware stealer

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
3980	af6612aac93dcf264f6875cd9538db8c.exe
3980	af6612aac93dcf264f6875cd9538db8c.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4072	3980	WerFault.exe	81

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4256	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3980	af6612aac93dcf264f6875cd9538db8c.exe
3980	af6612aac93dcf264f6875cd9538db8c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 888	3980	af6612aac93dcf264f6875cd9538db8c.exe	90
PID 3980 wrote to memory of 888	3980	af6612aac93dcf264f6875cd9538db8c.exe	90
PID 3980 wrote to memory of 888	3980	af6612aac93dcf264f6875cd9538db8c.exe	90
PID 888 wrote to memory of 4256	888	cmd.exe	94
PID 888 wrote to memory of 4256	888	cmd.exe	94
PID 888 wrote to memory of 4256	888	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\af6612aac93dcf264f6875cd9538db8c.exe
"C:\Users\Admin\AppData\Local\Temp\af6612aac93dcf264f6875cd9538db8c.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\af6612aac93dcf264f6875cd9538db8c.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:888
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 2092
  2⤵
  - Program crash
  PID:4072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3980 -ip 3980
1⤵
PID:5000

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

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
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/3980-136-0x00000000025E0000-0x00000000025F5000-memory.dmp

Filesize
84KB

Download
memory/3980-138-0x0000000002600000-0x000000000261B000-memory.dmp

Filesize
108KB

Download
memory/3980-139-0x0000000000400000-0x0000000002433000-memory.dmp

Filesize
32.2MB

Download
memory/3980-140-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3980-187-0x0000000000400000-0x0000000002433000-memory.dmp

Filesize
32.2MB

Download
memory/3980-137-0x0000000000400000-0x0000000002433000-memory.dmp

Filesize
32.2MB

Download
memory/3980-133-0x00000000025E0000-0x00000000025F5000-memory.dmp

Filesize
84KB

Download
memory/3980-135-0x0000000000400000-0x0000000002433000-memory.dmp

Filesize
32.2MB

Download
memory/3980-134-0x0000000002600000-0x000000000261B000-memory.dmp

Filesize
108KB

Download
memory/3980-220-0x0000000000400000-0x0000000002433000-memory.dmp

Filesize
32.2MB

Download