10980a1ff1828640b371404349b4d636b6991638f5a32574dd76212b92daf943

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03-02-2024 04:08

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General

Target

2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe
Size

99KB
MD5

88e27347d66a97520cb53274c7fc02cb
SHA1

ceaa1c8cfe7a6cdf918163b3c2a6ff0de7d2ad35
SHA256

10980a1ff1828640b371404349b4d636b6991638f5a32574dd76212b92daf943
SHA512

47ccb332152b12979ec718a333f8930825fdf9f39701039a77ca43bac3eac200a6ca435ec623c2b5da0bd87dd5f55f8776d1e6da371b1bb7ffab2ac02d844deb
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwI7:26a+2OtEvwDpjtz/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e0-12.dat	CryptoLocker_set1

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4216	asih.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 3324 wrote to memory of 4216	3324	2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe	63
PID 3324 wrote to memory of 4216	3324	2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe	63
PID 3324 wrote to memory of 4216	3324	2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe	63

C:\Users\Admin\AppData\Local\Temp\2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_88e27347d66a97520cb53274c7fc02cb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3324
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4216

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\asih.exe

Filesize
99KB

MD5
bdb2d4625bae1ef7d13ea2f13bff342f

SHA1
11a12d8931d6e1de38e5a8b21e2b99033f8f1f95

SHA256
6427d2bc7f46104d2982f0e14131b308471cdab50032e6249cf83371645f4a94

SHA512
0665cd39ce207f4c360d5a35ff7ea18c8e3f850edac549c53315f2043022890fd5d09f582581ab61f7d55c7969b6c433c632c18398863fcdd242d9f9e811541a

Download Submit
memory/3324-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3324-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3324-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4216-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4216-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download