2573e6e22bc334637bdfc99b3f1619f7589584ff78ec4ea83b552cad758d836a

Analysis

max time kernel
141s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 04:46

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General

Target

2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe
Size

33KB
MD5

aac26f41e76fe98d223e6e6e7aa8e39e
SHA1

3d6ca249b8f01feb66ba121478f939d29813e505
SHA256

2573e6e22bc334637bdfc99b3f1619f7589584ff78ec4ea83b552cad758d836a
SHA512

1da5f1bc75c8c186dd21c919fbf90d7a7c9988bcfef48e9a6bc4ba445eeb33ac394940002fc3c8a09b2a75fdb3df205ec04516bb6c18b07aacdadda51e360090
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Md:bxNrC7kYo1Fxf2rYI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023211-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
2784	pissa.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 4636 wrote to memory of 2784	4636	2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe	84
PID 4636 wrote to memory of 2784	4636	2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe	84
PID 4636 wrote to memory of 2784	4636	2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_aac26f41e76fe98d223e6e6e7aa8e39e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2784

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\pissa.exe

Filesize
33KB

MD5
26452c0e3f68e579a0ca9f6ace6c8487

SHA1
50ed099a2213951b02adb569516bc008adf876e2

SHA256
1adcc0a168cd178bbd264ad8d4f768fc011d3eaef178be119c6cd3182e936c58

SHA512
f22f04928658168863e0b09d0ac964be98792fb0093e213b2178779473be7962695b626b138c380a15c2c8f64834a37bd5358df9d9afaa5679784a85ae66ce9e

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2784-18-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/2784-17-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4636-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4636-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4636-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download