e1f7cb1103cc89d96acaa8dc1a10ad1d9e0b9978399949a3027ef4dc7ae667f5

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 14:59

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General

Target

2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe
Size

390KB
MD5

b3ac5f80f570705f61928e57f7d6b867
SHA1

b46532af0c552617fbd9c74d9f7c73c672c2ad6e
SHA256

e1f7cb1103cc89d96acaa8dc1a10ad1d9e0b9978399949a3027ef4dc7ae667f5
SHA512

7da5105c3322a7d82b0471366d3bae505ca671e5e5a516f976177d8437e99ad5d1a512a82b3f8d25bc3c5382b4a18ac94e2e7c345d62118774a2bf0836c63a95
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXc:nnOflT/ZFIjBz3xjTxynGUOUhXc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023276-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4776	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 2968 wrote to memory of 4776	2968	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	83
PID 2968 wrote to memory of 4776	2968	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	83
PID 2968 wrote to memory of 4776	2968	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4776

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
390KB

MD5
ac902d9a91a98fe6727a0d456e16277c

SHA1
3731af2a00aa5b0cff55123ba3ea344801170939

SHA256
90f19ab3334b9d984fb9f3f57e06f76d71964be52e5947a8f12871cfa1ee5be2

SHA512
b15ab9cb3f4704fcac37d5041337a18bafdb70f62821b0a531b582bb6a2257cfcdbe24053906ae4ed3a82930220c68c496b64a592345f8af9e26cc92da4e83dc

Download Submit
memory/2968-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/2968-1-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/2968-8-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4776-17-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4776-23-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download