d85c6a67ae91a6f495db1f4fbfe129048694882740d6f8b40bb6427d70b2c95f

Analysis

max time kernel
140s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 03:52

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General

Target

2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe
Size

40KB
MD5

b717af6d78bf813d29b3dd649138bbbb
SHA1

c4a8a0acb6b5ff2693a01773f898510dd893349d
SHA256

d85c6a67ae91a6f495db1f4fbfe129048694882740d6f8b40bb6427d70b2c95f
SHA512

d0da23fd146f6209dba88487e8565cd189ff012cc68bd86adb1525402fc8aef49ce18f8cfdb8d96098e6370692785c1e0766d33d98932b8dfc91df70bd1ce817
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3py/yY/Ja:bAvJCF+RQgJeab4sy/lg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023222-12.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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	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 5108 wrote to memory of 3488	5108	2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe	91
PID 5108 wrote to memory of 3488	5108	2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe	91
PID 5108 wrote to memory of 3488	5108	2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_b717af6d78bf813d29b3dd649138bbbb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5108
- 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:3488

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\demka.exe

Filesize
41KB

MD5
3d95c7281e12cfd309a73407ee335a8b

SHA1
d42e6fdf2e77005727dcbce34f6dc9b18e4b9c24

SHA256
a45d88afbac08a11eb940ceca0cc0580c3f2c048b09d84745f3f0e44df2c38e4

SHA512
480ced64f23c9daab6327d5dc59b741b082c45a51460409e4b1c177d0f22d7e7ac30c34b5d95cc7987753ff7d1d621b735efb931963b9b14d1c88177090657ee

Download Submit
memory/3488-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/5108-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5108-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5108-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download