8be29d6ed24f8a7fda06a422370d777a16e38f05b1c743a108e02d1a59423522

Analysis

max time kernel
133s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 20:26

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General

Target

2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe
Size

35KB
MD5

388fb132d222bb914bce3ebfbd6d742f
SHA1

d36ffa45dcbcc69416ec908ebb15bd55d5ae5864
SHA256

8be29d6ed24f8a7fda06a422370d777a16e38f05b1c743a108e02d1a59423522
SHA512

3ebc0731d0d3635761e348ef20b02196c799134813872b79d9316b847b8a52b30c897756174e4ef5d4f50a11fe91bbc0f87810b30ce2db934c0bd64cfbfa7563
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5ejvb:bxNrC7kYo1Fxf2rYuT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233dd-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	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 1620 wrote to memory of 3592	1620	2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe	83
PID 1620 wrote to memory of 3592	1620	2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe	83
PID 1620 wrote to memory of 3592	1620	2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_388fb132d222bb914bce3ebfbd6d742f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620
- 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:3592

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
4d9d18cc93dfe8feb8ad4e0091c5399d

SHA1
4763152ec3e0069a05eeb38a2e8f1c9610451203

SHA256
6912e53e5d10a0e586f4f2f909323de060e10bfc7fbfdbe2e41b369e106a0103

SHA512
edd1a73984acb025283af8602e29a7cf80897aa25dfd2f0a5660b920887e0b5b349930724e2a4d0336403bf31bba2efd6384ebd3ee43c8f66d5462f627738668

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1620-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1620-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1620-8-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3592-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download