309015b766fa379cdf3ff5082854403334fff56c1cfe1ab9e2de40a06773a915

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 03:27

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General

Target

2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe
Size

63KB
MD5

179d3282117255a548bd761c83d8d73f
SHA1

60e6057f2e081134836d0bd84e46375e8c4e41ff
SHA256

309015b766fa379cdf3ff5082854403334fff56c1cfe1ab9e2de40a06773a915
SHA512

fb39c5374b4f0b18458c4fc63919093da62cabbdfa95b87339a209f92136bcc9e270b651d3efd153ba17f83c4475b70dc01f191105f8d11f6037dd50d193ce8f
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxO:btng54SMLr+/AO/kIhfoKMHdPO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_rule2

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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1620	gewos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	1472	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 1620	972	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	86
PID 972 wrote to memory of 1620	972	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	86
PID 972 wrote to memory of 1620	972	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:1620

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:1596

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1472

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\gewos.exe

Filesize
63KB

MD5
15015535bd2cda369afbb05f48e9fbeb

SHA1
2819163913de2fd32d1eea243ad8da627f9ae24c

SHA256
bfff6d9d99fdf273333666ccf161f1ad19e61dee843fc400d101bf116fb0dd8b

SHA512
4eb604b7bd142b6ebddc72a87e8872842c0a09b5a62e8ab3a54c4b01b6a46f4ca55ee8544a01ba981dff6b5f5ed723a90bd619e4efe92eb8dcdb3e93b23a42d4

Download Submit
memory/972-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/972-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/972-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1472-40-0x000001803A340000-0x000001803A350000-memory.dmp

Filesize
64KB

Download
memory/1472-56-0x000001803A440000-0x000001803A450000-memory.dmp

Filesize
64KB

Download
memory/1472-72-0x0000018042770000-0x0000018042771000-memory.dmp

Filesize
4KB

Download
memory/1472-74-0x00000180427A0000-0x00000180427A1000-memory.dmp

Filesize
4KB

Download
memory/1472-75-0x00000180427A0000-0x00000180427A1000-memory.dmp

Filesize
4KB

Download
memory/1472-76-0x00000180428B0000-0x00000180428B1000-memory.dmp

Filesize
4KB

Download
memory/1620-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download