stealc | fe9891d660a387e065802120c0c66e6c50ccf915af7d0b5df7588fd29fa6e8b9

General

Target

3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe
Size

252KB
MD5

9452dff09397314ab6dc4c685e6c8f02
SHA1

3374e1886a0992cc147ae1d0005ee387b3840354
SHA256

3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c
SHA512

f9cde18bba746fa189ba9a4f995707f802d934550606905dc54420cbaff66268db61b63c57a0891d63040d95eee663b424ae472721474ec15e541b66c7f97c19
SSDEEP

3072:bwd998ZfNKx2bdV4VUVAMmoymL0qMA6wcyN7cQZzi0oeH5NrM0:C98KwbXV3moymJMGNtcQZz5vr

Score

10^/10

stealc discovery stealer

Malware Config

Extracted

Family

stealc

C2

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	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe

Executes dropped EXE 1 IoCs

pid	Process
3376	2806455892.exe

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).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1960	5088	WerFault.exe	84

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	2806455892.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2806455892.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1708	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3376	2806455892.exe
3376	2806455892.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 4212	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	98
PID 5088 wrote to memory of 4212	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	98
PID 5088 wrote to memory of 4212	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	98
PID 4212 wrote to memory of 3376	4212	cmd.exe	100
PID 4212 wrote to memory of 3376	4212	cmd.exe	100
PID 4212 wrote to memory of 3376	4212	cmd.exe	100
PID 5088 wrote to memory of 3932	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	101
PID 5088 wrote to memory of 3932	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	101
PID 5088 wrote to memory of 3932	5088	3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe	101
PID 3932 wrote to memory of 1708	3932	cmd.exe	104
PID 3932 wrote to memory of 1708	3932	cmd.exe	104
PID 3932 wrote to memory of 1708	3932	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe
"C:\Users\Admin\AppData\Local\Temp\3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\2806455892.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4212
- - C:\Users\Admin\AppData\Local\Temp\2806455892.exe
    "C:\Users\Admin\AppData\Local\Temp\2806455892.exe"
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:3376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3c384c9d8c7d64f86d8506f713191cd90b83ec734a19137ce86f13067bbc426c.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 1480
  2⤵
  - Program crash
  PID:1960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 5088 -ip 5088
1⤵
PID:3808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2806455892.exe

Filesize
274KB

MD5
a523b0620bae2e1d3384667c681791f1

SHA1
c73f203fea375f2bf9f96abb1b4ece3adb5da84f

SHA256
bc6ebf980781a3ef1b4a3a737245892c6870356b93e406c34f29e7ac5d025864

SHA512
e9b2b0747e9a3b1b5c3c7e6bb873e5911c3f48910f51c05af515fcdca75b9b254719ab4202cd5bd6f572fac9177d4a47eec0037b42d34270501f3038e322e4d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\2806455892.exe

Filesize
274KB

MD5
a523b0620bae2e1d3384667c681791f1

SHA1
c73f203fea375f2bf9f96abb1b4ece3adb5da84f

SHA256
bc6ebf980781a3ef1b4a3a737245892c6870356b93e406c34f29e7ac5d025864

SHA512
e9b2b0747e9a3b1b5c3c7e6bb873e5911c3f48910f51c05af515fcdca75b9b254719ab4202cd5bd6f572fac9177d4a47eec0037b42d34270501f3038e322e4d6

Download Submit
memory/3376-29-0x00000000022C0000-0x00000000023C0000-memory.dmp

Filesize
1024KB

Download
memory/3376-30-0x00000000022A0000-0x00000000022BB000-memory.dmp

Filesize
108KB

Download
memory/3376-31-0x0000000000400000-0x000000000228B000-memory.dmp

Filesize
30.5MB

Download
memory/3376-33-0x0000000000400000-0x000000000228B000-memory.dmp

Filesize
30.5MB

Download
memory/3376-34-0x00000000022C0000-0x00000000023C0000-memory.dmp

Filesize
1024KB

Download
memory/5088-5-0x0000000000400000-0x00000000005B6000-memory.dmp

Filesize
1.7MB

Download
memory/5088-6-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/5088-7-0x0000000002330000-0x000000000236E000-memory.dmp

Filesize
248KB

Download
memory/5088-3-0x0000000000400000-0x00000000005B6000-memory.dmp

Filesize
1.7MB

Download
memory/5088-2-0x0000000002330000-0x000000000236E000-memory.dmp

Filesize
248KB

Download
memory/5088-28-0x0000000000400000-0x00000000005B6000-memory.dmp

Filesize
1.7MB

Download
memory/5088-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads