33de595df2bddc0070a42f082ed3750ef60670bdea472abd3a9fcc94cd99a967

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 16:51

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General

Target

2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe
Size

55KB
MD5

c8c4a515d630d43439d78991dab6558f
SHA1

bc39053378558794c348248a114889cdeda6165d
SHA256

33de595df2bddc0070a42f082ed3750ef60670bdea472abd3a9fcc94cd99a967
SHA512

73b6923b098fbfc053ee0a95d28c47307a154699dcc58708ccc558c7f2791a907dfcce1f846778c3f8c7331d3ddfa282140f4f2c4756be9692f25bb89dc050a9
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LJbP:X6QFElP6n+gJBMOtEvwDpjBtE1yILJD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023200-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023200-12.dat	CryptoLocker_set1

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 4968	2864	2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe	90
PID 2864 wrote to memory of 4968	2864	2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe	90
PID 2864 wrote to memory of 4968	2864	2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_c8c4a515d630d43439d78991dab6558f_cryptolocker.exe"
1⤵
- Checks computer location settings
- 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
  PID:4968

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
55KB

MD5
78bc58fe1690bc15dcfa0b7a31933c7b

SHA1
fc6b06f3c90e34ab961da5b5d1f4027fe879829a

SHA256
b9c79e291c9f109a94858f026915e8c39c75551b15d9994530a05512afa81c90

SHA512
47d9d87af11d599fa51201a0ddbef4ab4f71e619e64038235962736d64ff221d72f3180d3e95544dc25ea05b11326dd8a4963579487cb263c0429b7f276a0363

Download Submit
memory/2864-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2864-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2864-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/4968-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/4968-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download