485892f3304bd66d795a49c914ac8a8ec66944b4bc8a2ffce021f9702d79d927

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 09:52

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General

Target

2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe
Size

43KB
MD5

e64d75f0d54fa75fa1b8f9c421bb1744
SHA1

929e7f3a52a29a4a37f370cadb6fdc9ca5ba9038
SHA256

485892f3304bd66d795a49c914ac8a8ec66944b4bc8a2ffce021f9702d79d927
SHA512

f438d8b5f87eed82f4ab9595b899ec301fdbf26c88af71c2a026bc01588daecbfc73e38f2979be3d1f96db308358c7c002a6a04af870fa2692a16ae0a0922b10
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIQ:bm74zYcgT/Ekn0ryfjc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4816-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00050000000232a4-13.dat	CryptoLocker_rule2
behavioral2/memory/4516-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4816-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4516-27-0x0000000008000000-0x000000000800D000-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4516	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 4816 wrote to memory of 4516	4816	2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe	83
PID 4816 wrote to memory of 4516	4816	2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe	83
PID 4816 wrote to memory of 4516	4816	2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_e64d75f0d54fa75fa1b8f9c421bb1744_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4516

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
43KB

MD5
f3d1a8736ea7fd8a1a247e885da5b439

SHA1
79f6803b02fdd24bfa3f96d27dcf593a100aae2c

SHA256
97219ddc7a4ac3a2989a8be255d116bcf2016bd794d607bb62682ab01cb030c6

SHA512
783ba6e0007c1272603e0b087a2ae86a9e35e5ec81248db81c143e28d5f856b37379ec02b0a6f9452b376c145de71e708502e54a554df70f097baf510329e40c

Download Submit
memory/4516-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4516-20-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4516-26-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4516-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4816-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4816-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4816-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4816-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4816-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download