db55800c6289107d0aa96b0e4008c0cbfd68dc40aaf9315c5ffa799c6fe21b72

Analysis

max time kernel
151s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 16:40

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General

Target

2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe
Size

44KB
MD5

a10f783b32d39871cf592f20fb6d5b78
SHA1

93e2131412d19b6034ffe4379795fe1e32ee4505
SHA256

db55800c6289107d0aa96b0e4008c0cbfd68dc40aaf9315c5ffa799c6fe21b72
SHA512

f92b7af38aa25efe56c0eae98ccc9f8bf1b0da53235b995258fe2f2048d2eb9150d452f762280dc5d7e8b28f151f1b3ed905b5df153fbc84b47fd4b1d0483d57
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqRoN6d:bxNrC7kYo1Fxf3s05rwxbFvN6d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002310f-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4884	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 4000 wrote to memory of 4884	4000	2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe	85
PID 4000 wrote to memory of 4884	4000	2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe	85
PID 4000 wrote to memory of 4884	4000	2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_a10f783b32d39871cf592f20fb6d5b78_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4884

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
44KB

MD5
b81e15ed36a9fdeecf72a17655b60651

SHA1
d4d95641859de05993a5465bd0ea8fc04ad26df4

SHA256
42853905030eaba6213a0797ad20f94df2c8d2020b708bae59217388f8ea0703

SHA512
38c3d440aa374ffadc5bf2511d9be56502e5d5c041dac6b4a6205c4943b4313a90f7dbdf00368211ef66a023185f25fd20642f6d7d161c0e7e11824bae99df63

Download Submit
memory/4000-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4000-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4000-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/4884-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4884-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download