509ab923f7466871f32f64d07f8dc3b67ca1fa77547118f065d91a992da2a841

Analysis

max time kernel
153s
max time network
191s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2024, 05:49

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General

Target

2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe
Size

49KB
MD5

bf83daf5f74be17801d2a22bf7fd93e7
SHA1

ab97ab3c22293a62a296341ea52e364954ba6da4
SHA256

509ab923f7466871f32f64d07f8dc3b67ca1fa77547118f065d91a992da2a841
SHA512

4f91fffe906c30e561468a43047e32a63d7861689be35fcd0ac3f84c03be5ceee6ca6efed0e7d1c2121f74c524a7d0ad0919d891dc8786ba0d220d9c5e2c9adc
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQ7suIlsw92KFXpQenhP:V6QFElP6n+gMQMOtEvwDpjeJQ7pojk0

Score

7^/10

Malware Config

Signatures

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4440	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 4588 wrote to memory of 4440	4588	2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe	96
PID 4588 wrote to memory of 4440	4588	2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe	96
PID 4588 wrote to memory of 4440	4588	2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_bf83daf5f74be17801d2a22bf7fd93e7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4440

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
50KB

MD5
0a841be1c1edebf91c3b8a0be82e8eb7

SHA1
bf0cac2d5ab95cd68eb586af9062b8e67e9992dd

SHA256
e2c1ee955e19659b2434125fca24a30ff4e2c695d694b12b55936446e3bc1417

SHA512
18017e1529c936ed8a2fcb1135712fcff8333dad744c7d569ac946e96472cb5f7aa6fbd42399b660ed91428e46ca1d34ef455f3fcf7669eb41e974717e4289aa

Download Submit
memory/4440-17-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4440-18-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4588-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4588-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4588-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download