71dfa315b643a25f6f1204d23fc565b8e4399ba71e67eb070c78807ef496841f

Analysis

max time kernel
93s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 19:59

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General

Target

2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe
Size

35KB
MD5

4609cf0eac3d7f00e29d764e14c2d5ba
SHA1

72ec9135b2c4d1bf83efe3c079d890441f2ce483
SHA256

71dfa315b643a25f6f1204d23fc565b8e4399ba71e67eb070c78807ef496841f
SHA512

b93043f820ce2c0c8aaacb005e497d5a97b06f7ff40d0247f0896931a45eab2d391e148b7e415f36e1f838352f6188a8e6ef6c900be7b567a8a439bbbbb944a9
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7t:bxNrC7kYo1Fxf2rY1Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002346d-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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	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 4348 wrote to memory of 3620	4348	2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe	83
PID 4348 wrote to memory of 3620	4348	2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe	83
PID 4348 wrote to memory of 3620	4348	2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_4609cf0eac3d7f00e29d764e14c2d5ba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4348
- 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:3620

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
35KB

MD5
7ba77acf895baeaa24549808b7f3b073

SHA1
03a81ac8736b6e5bca2b13f868534cedde9454ad

SHA256
b56a93ea2f8b8d61fa40015aa0d994107d7e02ed03226de3cb998e87bde1aaf6

SHA512
571e00c32a5989e8a175fb2aedfe4cba10cadc6f1483fb6dbb06fdfda90d27e0cb7d26d7811c45df25ce3542f6c12a985cb0ef4c55ab984b87861585389dd7b7

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3620-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4348-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4348-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4348-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download