stealc | c0a8b772975259c3689d7fb83369fd211666217b7fb79192551851e8a6390b26

Analysis

max time kernel
94s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 12:26

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General

Target

27267ef964c6a63e33899a21fd121e78.exe
Size

3.7MB
MD5

27267ef964c6a63e33899a21fd121e78
SHA1

d08d9ed964bec7ce311ab9397b183ff92434b014
SHA256

c0a8b772975259c3689d7fb83369fd211666217b7fb79192551851e8a6390b26
SHA512

0956e365f70411a78b81b91f88ae4eec64b1704d05d1de4120edf97b79c4bc1206f93bb35eceffbaef5479cd491a818a896926cfb4f68897129f9c4accec92db
SSDEEP

49152:4vKWgICXIs3zby2amZ+Vc/9HKGuMLDgtwe5EnvNtorahDx6+ZT41g85eOU8BPRV3:4Cz1RaUBKxtpivLf5Z41CqRVMU/

Score

10^/10

stealc default credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://91.215.85.11

Attributes

url_path
/36d502da19ed71e2.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	svchost015.exe

Executes dropped EXE 1 IoCs

pid	Process
100	svchost015.exe

Loads dropped DLL 2 IoCs

pid	Process
100	svchost015.exe
100	svchost015.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1548 set thread context of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	27267ef964c6a63e33899a21fd121e78.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost015.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost015.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost015.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
100	svchost015.exe
100	svchost015.exe
100	svchost015.exe
100	svchost015.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1628	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1628	msiexec.exe
Token: SeSecurityPrivilege	4436	msiexec.exe
Token: SeCreateTokenPrivilege	1628	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1628	msiexec.exe
Token: SeLockMemoryPrivilege	1628	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1628	msiexec.exe
Token: SeMachineAccountPrivilege	1628	msiexec.exe
Token: SeTcbPrivilege	1628	msiexec.exe
Token: SeSecurityPrivilege	1628	msiexec.exe
Token: SeTakeOwnershipPrivilege	1628	msiexec.exe
Token: SeLoadDriverPrivilege	1628	msiexec.exe
Token: SeSystemProfilePrivilege	1628	msiexec.exe
Token: SeSystemtimePrivilege	1628	msiexec.exe
Token: SeProfSingleProcessPrivilege	1628	msiexec.exe
Token: SeIncBasePriorityPrivilege	1628	msiexec.exe
Token: SeCreatePagefilePrivilege	1628	msiexec.exe
Token: SeCreatePermanentPrivilege	1628	msiexec.exe
Token: SeBackupPrivilege	1628	msiexec.exe
Token: SeRestorePrivilege	1628	msiexec.exe
Token: SeShutdownPrivilege	1628	msiexec.exe
Token: SeDebugPrivilege	1628	msiexec.exe
Token: SeAuditPrivilege	1628	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1628	msiexec.exe
Token: SeChangeNotifyPrivilege	1628	msiexec.exe
Token: SeRemoteShutdownPrivilege	1628	msiexec.exe
Token: SeUndockPrivilege	1628	msiexec.exe
Token: SeSyncAgentPrivilege	1628	msiexec.exe
Token: SeEnableDelegationPrivilege	1628	msiexec.exe
Token: SeManageVolumePrivilege	1628	msiexec.exe
Token: SeImpersonatePrivilege	1628	msiexec.exe
Token: SeCreateGlobalPrivilege	1628	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1628	msiexec.exe
1628	msiexec.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 1548 wrote to memory of 100	1548	27267ef964c6a63e33899a21fd121e78.exe	85
PID 100 wrote to memory of 1628	100	svchost015.exe	98
PID 100 wrote to memory of 1628	100	svchost015.exe	98
PID 100 wrote to memory of 1628	100	svchost015.exe	98

C:\Users\Admin\AppData\Local\Temp\27267ef964c6a63e33899a21fd121e78.exe
"C:\Users\Admin\AppData\Local\Temp\27267ef964c6a63e33899a21fd121e78.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\Temp\svchost015.exe
  C:\Users\Admin\AppData\Local\Temp\svchost015.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:100
- - C:\Windows\SysWOW64\msiexec.exe
    "C:\Windows\system32\msiexec.exe" /i "C:\ProgramData\BKJDGCGDAA.msi" /passive
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    PID:1628

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

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
C:\Users\Admin\AppData\Local\Temp\svchost015.exe

Filesize
2.9MB

MD5
b826dd92d78ea2526e465a34324ebeea

SHA1
bf8a0093acfd2eb93c102e1a5745fb080575372e

SHA256
7824b50acdd144764dac7445a4067b35cf0fef619e451045ab6c1f54f5653a5b

SHA512
1ac4b731b9b31cabf3b1c43aee37206aee5326c8e786abe2ab38e031633b778f97f2d6545cf745c3066f3bd47b7aaf2ded2f9955475428100eaf271dd9aeef17

Download Submit
memory/100-8-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-10-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-11-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/100-50-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-57-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-4-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-91-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/100-98-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/1548-9-0x0000000000400000-0x00000000007BE000-memory.dmp

Filesize
3.7MB

Download
memory/1548-0-0x0000000002670000-0x0000000002671000-memory.dmp

Filesize
4KB

Download
memory/1548-1-0x0000000002E50000-0x0000000003192000-memory.dmp

Filesize
3.3MB

Download