a115d0ef353ac2dd8aa2dc0815ed52349e17b2c0ea63fc8b542a0f984b0eb520

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 01:19

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General

Target

2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe
Size

41KB
MD5

bb6009542a5549c98d2cf08e1e906d8b
SHA1

2ce57ba92f49dff34fe964ba97004a6de8845fba
SHA256

a115d0ef353ac2dd8aa2dc0815ed52349e17b2c0ea63fc8b542a0f984b0eb520
SHA512

d601c0a30d1b6e7ecb4c27063dec3f6132b4ec3dc351c6418d2bbeecb767625c8fc149af0727d29e704428bea6fb7c9a1474efed0e0e35d4c6ecd60e25c26992
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRi4:qTJu9cvMOtEvwDpjppVXzR5

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2292-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00080000000234cc-13.dat	upx
behavioral2/memory/2292-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2868-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 2 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	2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2868	2292	2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe	83
PID 2292 wrote to memory of 2868	2292	2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe	83
PID 2292 wrote to memory of 2868	2292	2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_bb6009542a5549c98d2cf08e1e906d8b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2868

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
41KB

MD5
27108143eeab7268507485f47b4c38d4

SHA1
c8f7bd13c635142bb1411e98939d650e12a7826c

SHA256
69f2d4a573291bb13e2673332a6bbfcfe1a99c1f7bf7101308132d64ff5457b0

SHA512
3c33ed896a44713fcb2cdec87774ac800e788bc5af0210ca1939507307401508bfd6cbafdf177804e4e9daff386d8030ea80cbff80d4e539a90f26ce85aea7f1

Download Submit
memory/2292-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2292-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2292-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2292-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2292-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2868-19-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2868-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download