a2068c381bcd1b588544799a8e72cdcb7e3c2dc7bd3f3f531a6ce8d9fc7040e4

Analysis

max time kernel
146s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 16:05

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General

Target

2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe
Size

44KB
MD5

dcb20518dc2b4c3e9ad260c77d9d0308
SHA1

faf31b5db444a5b2519c7464f3dd37cbbdd086e8
SHA256

a2068c381bcd1b588544799a8e72cdcb7e3c2dc7bd3f3f531a6ce8d9fc7040e4
SHA512

478a3aaefd6cf910083d368b1f0d796f46612d482fa696fc2043f5e5f9126a21556e017290960a4b338a8789bce83a4a1eb9025fddc6cc2b47cba6e453e6d2a0
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YlPvn:bgGYcA/53GAA6y37QX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002317f-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1480	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 4396 wrote to memory of 1480	4396	2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe	84
PID 4396 wrote to memory of 1480	4396	2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe	84
PID 4396 wrote to memory of 1480	4396	2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1480

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
44KB

MD5
1274db7164562bfcee4139dc1fafe6fe

SHA1
6df064933f1147c1349d3c7453dcfced6511f746

SHA256
7fcf92d6883885f7998def3d359b0bc2ed242453f0103ee849246cb3c893657f

SHA512
8cc235b640c8fde056aca24a68cfc424213e5262d787b4339823afe9f75aa91a0b8cad44cda039f3ea801e89ecc761f9bfd0771e0b8a617a14aeaf92126bcca1

Download Submit
memory/1480-19-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4396-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4396-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4396-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download