2a993da831a1c5140da2e1bf68b3cb759c3863f691a135676bf6e152a1b10c4e

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 08:43

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General

Target

2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe
Size

36KB
MD5

878cf4550c1b5772b9b562bf7cd962fa
SHA1

4610d524ac6f55acd1ec65eadb02275223e9f29b
SHA256

2a993da831a1c5140da2e1bf68b3cb759c3863f691a135676bf6e152a1b10c4e
SHA512

69327c84d5c9585fb6111567e94516a85c49db6521efb3dbebdf6a6606b9ae68a3deded758e8b125baafba5762b6d8673a281d6e15b9af79edc365b2168a133b
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYE:vj+jsMQMOtEvwDpj5HcSYE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023149-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023149-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3876	misid.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 2816 wrote to memory of 3876	2816	2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe	85
PID 2816 wrote to memory of 3876	2816	2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe	85
PID 2816 wrote to memory of 3876	2816	2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_878cf4550c1b5772b9b562bf7cd962fa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3876

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

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Downloads

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

Filesize
36KB

MD5
4a12e317ace80354c67b98eeb964c247

SHA1
90b56e91d609b3dbf8f9f3806d623ca180dea8cc

SHA256
d42ce727d246a290a29fc44e045ac0d9b56d6e29f8b115c6a30f8ccc8918785a

SHA512
ee27802d8818a9dd0eca29d6b099cb1c8f27fdfedb1aa438550a597c5192c6d776200ea760c30205ff375fa4a501748fb6a276a6af46e12d202110ced6cf4d1a

Download Submit
memory/2816-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2816-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2816-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3876-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3876-18-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download