stealc | 87c9f6da1bde1c4762477b55c8fbd4f821464f23669c08eef59df00adc438a37

Analysis

max time kernel
158s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2023, 00:47

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General

Target
file.exe
Size 345KB
Sample231007-a47smsge9x
SHA256 87c9f6da1bde1c4762477b55c8fbd4f821464f23669c08eef59df00adc438a37
MD5 1860ebf427dccac7292813bb1fa12e5b
SHA1 d889765ae93d9543ac9725345ab3814490d176a7
SHA512 ed2a155d6128b7c8c958c89e823f3ec7c95ac5770f4bd8731ebcbeb70fa3a8df42a9cf54dec1121a07185766f759ed08b404840fee36c32d320de18acf70db6b
SSDEEP 6144:aMGZ2bjyNNGhGwfAe90daIOT7DGDdJtLYL:RUwjyNoGwxMaJQ7E
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc stealer

Malware Config

Extracted

Family

stealc

http://aidandylan.top

Attributes

url_path
/3886d2276f6914c4.php

rc4.plain

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer 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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 1 IoCs

pid	Process
3840	3050554483.exe

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
788	4908	WerFault.exe	84

Kills process with taskkill 1 IoCs

evasion

pid	Process
2092	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 2848	4908	file.exe	97
PID 4908 wrote to memory of 2848	4908	file.exe	97
PID 4908 wrote to memory of 2848	4908	file.exe	97
PID 2848 wrote to memory of 3840	2848	cmd.exe	99
PID 2848 wrote to memory of 3840	2848	cmd.exe	99
PID 2848 wrote to memory of 3840	2848	cmd.exe	99
PID 4908 wrote to memory of 748	4908	file.exe	100
PID 4908 wrote to memory of 748	4908	file.exe	100
PID 4908 wrote to memory of 748	4908	file.exe	100
PID 748 wrote to memory of 2092	748	cmd.exe	104
PID 748 wrote to memory of 2092	748	cmd.exe	104
PID 748 wrote to memory of 2092	748	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\3050554483.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Users\Admin\AppData\Local\Temp\3050554483.exe
    "C:\Users\Admin\AppData\Local\Temp\3050554483.exe"
    3⤵
    - Executes dropped EXE
    PID:3840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:748
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1336
  2⤵
  - Program crash
  PID:788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4908 -ip 4908
1⤵
PID:5116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

3050554483.exe

Path C:\Users\Admin\AppData\Local\Temp\3050554483.exe
Size 274KB
SHA256 bc6ebf980781a3ef1b4a3a737245892c6870356b93e406c34f29e7ac5d025864
MD5 a523b0620bae2e1d3384667c681791f1
SHA1 c73f203fea375f2bf9f96abb1b4ece3adb5da84f
SHA512 e9b2b0747e9a3b1b5c3c7e6bb873e5911c3f48910f51c05af515fcdca75b9b254719ab4202cd5bd6f572fac9177d4a47eec0037b42d34270501f3038e322e4d6
SSDEEP 3072:zpvIdZH5OkLkcYu3OCSBbNH/5ndpm76WhZjL0of8:t+ZZOkhAdHE2KZj/f
MD5 SHA1 SHA512 SSDEEP

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3050554483.exe

Path C:\Users\Admin\AppData\Local\Temp\3050554483.exe
Size 274KB
SHA256 bc6ebf980781a3ef1b4a3a737245892c6870356b93e406c34f29e7ac5d025864
MD5 a523b0620bae2e1d3384667c681791f1
SHA1 c73f203fea375f2bf9f96abb1b4ece3adb5da84f
SHA512 e9b2b0747e9a3b1b5c3c7e6bb873e5911c3f48910f51c05af515fcdca75b9b254719ab4202cd5bd6f572fac9177d4a47eec0037b42d34270501f3038e322e4d6
SSDEEP 3072:zpvIdZH5OkLkcYu3OCSBbNH/5ndpm76WhZjL0of8:t+ZZOkhAdHE2KZj/f
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3840-31-0x0000000002450000-0x0000000002550000-memory.dmp

Download

memory/3840-32-0x00000000023F0000-0x000000000240B000-memory.dmp

Download

memory/3840-33-0x0000000000400000-0x000000000228B000-memory.dmp

Download

memory/4908-1-0x0000000002540000-0x0000000002640000-memory.dmp

Download

memory/4908-2-0x0000000003FE0000-0x000000000401E000-memory.dmp

Download

memory/4908-3-0x0000000000400000-0x0000000002293000-memory.dmp

Download

memory/4908-5-0x0000000002540000-0x0000000002640000-memory.dmp

Download

memory/4908-6-0x0000000000400000-0x0000000002293000-memory.dmp

Download

memory/4908-7-0x0000000003FE0000-0x000000000401E000-memory.dmp

Download

memory/4908-34-0x0000000000400000-0x0000000002293000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads