f417a81402a0d9bd2b999ee40d5bfc834fbaf046fdf3ab0a71323a8a860136dd

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 19:29

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General

Target

2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe
Size

61KB
MD5

1965cd5f105a4607a87fdbb63073e3f7
SHA1

2375552e6c78b90fda092c08d5bd2fe5dc35a71b
SHA256

f417a81402a0d9bd2b999ee40d5bfc834fbaf046fdf3ab0a71323a8a860136dd
SHA512

aa488715317d3d4545b22c8d31103e5f5f4b692c032edb28cb76597eedaf2c24a03dd401f5dc7f4e8f37024153ff5c703e23d589b753762d979baf20523ef519
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xEm:X6a+SOtEvwDpjBrOn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fa-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fa-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4340	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 2972 wrote to memory of 4340	2972	2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe	88
PID 2972 wrote to memory of 4340	2972	2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe	88
PID 2972 wrote to memory of 4340	2972	2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_1965cd5f105a4607a87fdbb63073e3f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4340

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
61KB

MD5
ec4042632226dc701866b8dc67a18590

SHA1
a4af449de210a93aae139fc560c12d46ed80d560

SHA256
995e7be16ae90f9769f9faf9ee58467a141b93e999902d8a63aaa977b3ba0ea5

SHA512
b5493e08b1a4e7924fce83e04a6b79e4201435140c7162512548cf83a693a6ddd8a8bcfea629ec60a6169829453dec5e5c3b54d6c3d68cdc4e40e42b8f813107

Download Submit
memory/2972-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2972-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2972-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4340-19-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/4340-17-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download