c51f3928d149b8d7e662da27e16e3d8a499e39fb940bce58ea5be1bcf0cb8a7f

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 12:25

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General

Target

2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe
Size

73KB
MD5

f260a0e29bfb95d68305cb12ebcaaf5f
SHA1

b9f48db2d4180e715965192b9fd8bf44e5ddfd2d
SHA256

c51f3928d149b8d7e662da27e16e3d8a499e39fb940bce58ea5be1bcf0cb8a7f
SHA512

06f51f064503e2678e6d69eea17d1a5aa250f357a68ba79b883fceaec0d73210123d2fbc78191dcf08d3148058e9e535c2772318603a8c69ec71235564a43867
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMst6:u6QFElP6n+gWMOtEvwDpjJGYQbE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3044	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 3532 wrote to memory of 3044	3532	2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe	82
PID 3532 wrote to memory of 3044	3532	2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe	82
PID 3532 wrote to memory of 3044	3532	2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_f260a0e29bfb95d68305cb12ebcaaf5f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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
74KB

MD5
87fd2e02841b8a7313904e4bb9379c43

SHA1
1cedd623b56d3ac3fd32987efd64de4ac90a42e0

SHA256
a424e56c735c2e9dfce660a41eab74d372344945728eefe50bbc9eb4e3ec839e

SHA512
afe50c5905015d5cd33b7da704b47cdb89d488e15afa4e923e4928ccf07299da4a0e763e711934236bc483860f292583140044992665f10bbfc8e657707523c5

Download Submit
memory/3044-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3044-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3532-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3532-1-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3532-8-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download