cryptbot | 37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b

Analysis

max time kernel
146s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2024, 06:21

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General

Target
37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe
Size 7.1MB
Sample241013-g4nhbsshle
SHA256 37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b
MD5 4e727fa44f217c2ff6317d48e04b8ee2
SHA1 1e69bae37d222408dc0764e0b1f02235cece6e16
SHA512 5a7ae5fb1c1bf37f388e34e2416a21bb9880470eebf4e7e8119966a25c0c2c2317c2fcf538f51c4cc318670076e4e11b8b3f5a43c6ccef4f4d966a94579af3f9
SSDEEP 196608:ENbjuEpiQTj6V0teQZ/zy61OGpaeTyK/YQnDORN8:CPuEpmEJ5z5Om/5Dx
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptbot stealc v5 credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

http://45.86.230.234

Attributes

url_path
/9e6547173a597645.php

Signatures

CryptBot
CryptBot is a C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot

Detects CryptBot payload 1 IoCs

CryptBot is a C++ stealer distributed widely in bundle with other software.

spyware stealer

resource	yara_rule
behavioral2/memory/3436-28-0x0000000069CC0000-0x000000006A377000-memory.dmp	family_cryptbot_v3

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

Checks computer location settings 2 TTPs 2 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	VC_redist.x86.exe

Executes dropped EXE 5 IoCs

pid	Process
1644	VC_redist.x64.exe
3436	VC_redist.x86.exe
1048	service123.exe
404	service123.exe
2776	service123.exe

Loads dropped DLL 5 IoCs

pid	Process
1588	BitLockerToGo.exe
1588	BitLockerToGo.exe
1048	service123.exe
404	service123.exe
2776	service123.exe

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 1644 set thread context of 1588	1644	VC_redist.x64.exe	88

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 6 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	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VC_redist.x64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VC_redist.x86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	service123.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Checks processor information in registry 2 TTPs 4 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	BitLockerToGo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	BitLockerToGo.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	VC_redist.x86.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	VC_redist.x86.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1588	BitLockerToGo.exe
1588	BitLockerToGo.exe
1588	BitLockerToGo.exe
1588	BitLockerToGo.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 1644	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	86
PID 3948 wrote to memory of 1644	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	86
PID 3948 wrote to memory of 1644	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	86
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 1644 wrote to memory of 1588	1644	VC_redist.x64.exe	88
PID 3948 wrote to memory of 3436	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	89
PID 3948 wrote to memory of 3436	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	89
PID 3948 wrote to memory of 3436	3948	37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe	89
PID 3436 wrote to memory of 1048	3436	VC_redist.x86.exe	93
PID 3436 wrote to memory of 1048	3436	VC_redist.x86.exe	93
PID 3436 wrote to memory of 1048	3436	VC_redist.x86.exe	93
PID 3436 wrote to memory of 4212	3436	VC_redist.x86.exe	94
PID 3436 wrote to memory of 4212	3436	VC_redist.x86.exe	94
PID 3436 wrote to memory of 4212	3436	VC_redist.x86.exe	94

C:\Users\Admin\AppData\Local\Temp\37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe
"C:\Users\Admin\AppData\Local\Temp\37671a3f18319af486ebfd7d1861d335056ae458df383312413590aba4e1e71b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
    "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:1588
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:3436
- - C:\Users\Admin\AppData\Local\Temp\service123.exe
    "C:\Users\Admin\AppData\Local\Temp\service123.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1048
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4212

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:404

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

mozglue.dll

Path C:\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 C:\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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VC_redist.x64.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe
Size 24.8MB
SHA256 6c3cf7fb373bc44421009cf2f651efe5ba589b59884f33b3a5e0351729fe8cef
MD5 d4e9110a79a775bab4fae156188884b3
SHA1 49d807fe50e30d9fd53954d02a4366f0a5c884d2
SHA512 a14c04f33e29b6335223eb2ae8d9efe041d5ba5c994bc9ac338f1132ec39256873501a65bb43704118399946e592030f0cef4ed523d86c55d63097294af6182b
SSDEEP 98304:EGRe2psN419hMCKw4lclTNayUWdiZo8GqdezDpgnAOZpP40vTbVFosgXjnk1ijwK:y2KN47hMCKUlmYgnAeIsg0i
MD5 SHA1 SHA512 SSDEEP

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VC_redist.x86.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe
Size 7.2MB
SHA256 ac35fc427952d4a283f69a51c9a166e61bc72072177f6aabbee5a62fe9ece2a0
MD5 52cca4535026d44d04230373590f57fa
SHA1 10c8b3e51a71d8adca731b985c34163a320b32c4
SHA512 54233882c2a8e7ed26d649527739ff28be185e8b0f62e66addef28a1638a0ced3614cb2d86a7691bf32f985541cd8674644b128e135f6bf7d5258a55c1336c41
SSDEEP 49152:uxJzqu/f+LCYNQB0FSZzi2VNWoHph7pw9D2/Qifr7rIYRhRB+O:eH/Os0FSZmWdD7pw9S
MD5 SHA1 SHA512 SSDEEP

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memory/404-128-0x00000000005B0000-0x00000000005C2000-memory.dmp

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memory/1048-121-0x0000000073410000-0x0000000073544000-memory.dmp

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memory/1048-120-0x00000000005B0000-0x00000000005C2000-memory.dmp

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memory/1588-19-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-37-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/1588-83-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-16-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-105-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-17-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-24-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/1588-14-0x0000000000800000-0x0000000000A61000-memory.dmp

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memory/2776-143-0x00000000005B0000-0x00000000005C2000-memory.dmp

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memory/3436-82-0x0000000000170000-0x000000000089E000-memory.dmp

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memory/3436-28-0x0000000069CC0000-0x000000006A377000-memory.dmp

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memory/3436-118-0x0000000000170000-0x000000000089E000-memory.dmp

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