87e2969f0834cbcb3302beef33a10259157fcbab16af383743900fcd5e9454c7

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-06-2024 04:23

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General

Target

2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe
Size

45KB
MD5

3e4bcd3646436cb2c94fcabdbb8fa409
SHA1

609b6b96499e9e76340781668806bfd9e94c74ae
SHA256

87e2969f0834cbcb3302beef33a10259157fcbab16af383743900fcd5e9454c7
SHA512

f5e84196aad41efcc525523230c75219303fa3b70cfc2d132ff118d4d6837c3871a16d027fed1b3f7f3b83f9e43cbc0e64c5e69ae51949394fbe93af2de78684
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3b+N3:bm74zYcgT/EkM0ryfjd3W3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2120-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/1128-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2120-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1128-27-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1128	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 2120 wrote to memory of 1128	2120	2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe	82
PID 2120 wrote to memory of 1128	2120	2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe	82
PID 2120 wrote to memory of 1128	2120	2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_3e4bcd3646436cb2c94fcabdbb8fa409_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1128

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
45KB

MD5
7aa91d52d5c2b2de583f772cd87bf607

SHA1
8bf96b57eb7d394eb7a57eea93f13393addfbc10

SHA256
95549eafd4eed45f25bcec87615504917846af203e34250f07d0d4bdda14acaf

SHA512
df278db30c6139bc07c3dffe4f301b14aaf07c49c208d613b2d634bd0abdac2c040a4176c8731707488ee0c6a9c9aa5399d70823ed2fc8cbdb3bab0d84fd2636

Download Submit
memory/1128-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1128-26-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/1128-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2120-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2120-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2120-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2120-9-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2120-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download