d167b7eb5d912c70c379b7a326a7a7088ad111dc4f5a2ae29a23cf890233005a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 03:00

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General

Target

2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe
Size

61KB
MD5

cb1d7e373fdd22250d78ad1114831f3d
SHA1

e613ea556057dd1c155885cd9851ce7d71201446
SHA256

d167b7eb5d912c70c379b7a326a7a7088ad111dc4f5a2ae29a23cf890233005a
SHA512

ece0e03abb05475d6563552e7d32f090c6a9501ab8ced59d75a5bf20037ff7a6c7c4743b67edacb32e9750537b56d73fd6f07f74825942e49e6c65621ffaa4cc
SSDEEP

1536:H6QFElP6n+gou9cvMOtEvwDpjCpVXhhg6:H6a+uSEOtEvwDpjg

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2864-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233c5-13.dat	upx
behavioral2/memory/2864-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2776-26-0x0000000000500000-0x0000000000510000-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	2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_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 2864 wrote to memory of 2776	2864	2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe	85
PID 2864 wrote to memory of 2776	2864	2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe	85
PID 2864 wrote to memory of 2776	2864	2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_cb1d7e373fdd22250d78ad1114831f3d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2864
- 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:2776

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

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Downloads

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

Filesize
61KB

MD5
6d93060590529a715481bd74c4eb8633

SHA1
3ecfb00e7b658e46961f79d8ee90df3988b76bd5

SHA256
03e377840879018a909bd7851f393dc68123271aa73ee969f123de9bdc8612c6

SHA512
46d224ea8f310e0cfd91c69690e29046e37edffb0692f6b6d2d1a766038ce9862d7f7855c994205aa8d86fc16380d91d78e24313097d7e4cffd46367a2145239

Download Submit
memory/2776-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2776-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2776-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2864-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2864-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2864-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2864-3-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2864-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download