5b8c7d85b071129d203d89e468a174fbee92c7c5a178a5af0194f24dfc2ac487

Analysis

max time kernel
94s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23-02-2024 20:40

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General

Target

2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe
Size

40KB
MD5

77db6742b66e7d855be3f6b9bd9c7107
SHA1

ef70b836746373963880d6356bb20d978774acd3
SHA256

5b8c7d85b071129d203d89e468a174fbee92c7c5a178a5af0194f24dfc2ac487
SHA512

aae6fdbe13b33ae2b65302d1a51519f4296d5ef4615d16ccecbaf65bdcaa59e7e5d2f1963ca1b66d19609939c1efbec5bfdc38b57d4f59ff4d3da5243206ba17
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3py/yY/YXW3:bAvJCF+RQgJeab4sy/lYXW3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	demka.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2332	demka.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 4756 wrote to memory of 2332	4756	2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe	87
PID 4756 wrote to memory of 2332	4756	2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe	87
PID 4756 wrote to memory of 2332	4756	2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_77db6742b66e7d855be3f6b9bd9c7107_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2332

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\demka.exe

Filesize
40KB

MD5
496a8c22d8786e78d100d7d7dc0f470f

SHA1
3853ce4db8d6c5bf726b95328820841197ccf330

SHA256
9d7d1d28f55bb984dc55cd92275674ec05845f3a9ba687a43fcee2a72283041b

SHA512
4ea0ca2e32db4f5908dc04122236398cae5b6fe3d210383993b8b20c3351552afa1cde121cfb8c7022a8ed81b9982b713eb0a08584a44a2855b07a21f906e23f

Download Submit
memory/2332-21-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4756-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4756-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4756-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download