a6d166334d1c4fea107160eece050f8ed8a9a4f4ebb93878b298978aa687ad1f

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 07:54

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General

Target

2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe
Size

385KB
MD5

7d54b917e6d112988197e1c1eb835abb
SHA1

4d822957f4b0742d83f1aaed4647f9b2b8c9edbf
SHA256

a6d166334d1c4fea107160eece050f8ed8a9a4f4ebb93878b298978aa687ad1f
SHA512

f63e48f69760667f35f578baca74375fe6cbcaa38a4134244a3d679b3c562fb01167a749e23c0d68d3a03e7e8bc0725bb508dfbd0c57dbe1472aeead5cecb4c1
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXJ:nnOflT/ZFIjBz3xjTxynGUOUhXJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023233-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1316	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 4820 wrote to memory of 1316	4820	2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe	86
PID 4820 wrote to memory of 1316	4820	2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe	86
PID 4820 wrote to memory of 1316	4820	2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_7d54b917e6d112988197e1c1eb835abb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1316

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
5461d122e4d65cdb34021b6e6dfd6f3a

SHA1
ed89020c9c7d2b653bda9e69cf455ee11be730c7

SHA256
0dba17ce384ed1807c5c52589db1e792af5adbe04cba5d900146188dab44cc2a

SHA512
4c14b74a488b9fcfd3c8b550ea4b32da64f1164d95d1a79569a7df64fbcee4a6473dff71e2339dc16eb9c7fc6963ecb40aca79865e7558a63e756cbb2f4770f6

Download Submit
memory/1316-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1316-17-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4820-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4820-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4820-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download