4dc021dd43b445bc78d67fc3a9f0210b55a43e526b67ad38dc570b82df96777f

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 15:23

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General

Target

2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe
Size

38KB
MD5

10d6880bb2ef02a7bc890c2596a347da
SHA1

dbc63954095929e9ed3ab999fb91dde044bdf6c4
SHA256

4dc021dd43b445bc78d67fc3a9f0210b55a43e526b67ad38dc570b82df96777f
SHA512

e7e7ebb4982ee1cfe20ee61fc24c36b817e718d2d2a2477d29ce954a482a32881a9a08961378847709f32eb5b357800fdd687c63cdd8bb946b3d4bc61ccca547
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfY:X6QFElP6n+gJQMOtEvwDpjBsYK6Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	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 3424 wrote to memory of 2692	3424	2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe	87
PID 3424 wrote to memory of 2692	3424	2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe	87
PID 3424 wrote to memory of 2692	3424	2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_10d6880bb2ef02a7bc890c2596a347da_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2692

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
38KB

MD5
bc989d1afea6321bdd5bd2eabf707d0d

SHA1
00201df64dd41fa368f3c8c87b7530913dcc0630

SHA256
898638355baed12ce840c81945cc38ffcd6407d54f19b77b30c2b70b1cf12c39

SHA512
377d8c89a68b5a3d01dbb1d995f3935ed74f2e6719f2b4c84058a7713aadca2c2a53327f6877c51209857aabdd006b20e23843853d5088e07af02bb6ef421dfa

Download Submit
memory/2692-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2692-18-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3424-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3424-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3424-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download