d6f93379b6336f8fdfb756ecaeec7a8457aa76371d0f02adbe39967c57e27828

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 05:31

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General

Target

2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe
Size

41KB
MD5

7bf5a7c553f523c8970155fab35c1f70
SHA1

c0b0ad347df38525c473d3addcd88f9946133f6b
SHA256

d6f93379b6336f8fdfb756ecaeec7a8457aa76371d0f02adbe39967c57e27828
SHA512

b0153d106ea0a5f64d28656d48503fc76a59f3508cad7a1efa662f48a98a7d78f79b888b0c8a97bdb76802b7f9cd2d0b7532357ab6e269c4cc0f582949445d41
SSDEEP

384:ba74uGLLQRcsdeQ72ngEr4K7YmE8j6CQYnrz1ZhdaXFXSCVQTLfjDpXqxKHM:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3120-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233d5-13.dat	CryptoLocker_rule2
behavioral2/memory/3120-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4768-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4768-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3120-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x00090000000233d5-13.dat	UPX
behavioral2/memory/3120-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/4768-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/4768-27-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

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	2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4768	hasfj.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3120-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00090000000233d5-13.dat	upx
behavioral2/memory/3120-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4768-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4768-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 3120 wrote to memory of 4768	3120	2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe	82
PID 3120 wrote to memory of 4768	3120	2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe	82
PID 3120 wrote to memory of 4768	3120	2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_7bf5a7c553f523c8970155fab35c1f70_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3120
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4768

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\hasfj.exe

Filesize
41KB

MD5
314012f237ffbc62c28cc39e223fece3

SHA1
dbf0c6b73fcaf4bb522275496d26f5f4ba3fc997

SHA256
45097939757225e99d0b56845f45add6058057244d7d2524f8e48d9043d4cc4e

SHA512
8103f28850020cc97d3775e5ab27de59deb8d128039362225b9f3ee3e38c0376af1d24a224e5f4d969f39f15ee158914fb1fdfa5ed2fe5d0551601e24711398e

Download Submit
memory/3120-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3120-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3120-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3120-9-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3120-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4768-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4768-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4768-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4768-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download