097f74ad5ed34988830f0d78aa54a3b72b1a24ac453990e1f5bd2acdb3dbe38f

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 19:28

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General

Target

2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe
Size

385KB
MD5

26f2d4a4c2afc64a6520b9a1971c7204
SHA1

ed8ac7969d23208a6f63cd1b381ecdacd0204d64
SHA256

097f74ad5ed34988830f0d78aa54a3b72b1a24ac453990e1f5bd2acdb3dbe38f
SHA512

4cf24b9716b62a13cb7cca17879cd89130ee8d54c3d6c70943de732c55e66f301b21c92e955dba28c60df32f4aafc5aac1d5586c9d4852e989776e8221221909
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXA:nnOflT/ZFIjBz3xjTxynGUOUhXA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231e4-12.dat	CryptoLocker_rule2

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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation	2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1172	hasfj.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 3968 wrote to memory of 1172	3968	2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe	87
PID 3968 wrote to memory of 1172	3968	2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe	87
PID 3968 wrote to memory of 1172	3968	2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_26f2d4a4c2afc64a6520b9a1971c7204_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1172

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\hasfj.exe

Filesize
385KB

MD5
eee4d6bef52b93d8707a2a22ec6ad3e7

SHA1
99ab17991219bee604f9a8d40214112bee630a63

SHA256
147a9c5bc52d4775d3dc953bcd04d91f4235aa9e058a2d46e67b83033ef875f1

SHA512
b414f33fad7bc7522dd2deefafc621fa6e2ebaa92d7b9e14b6a9859d7f5d5737a8a16569b67ccc70d47f36ad2d48131a573c27201eafd8210ef78926a5748b9c

Download Submit
memory/1172-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1172-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3968-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3968-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3968-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download