3fc57906d505bfd76350c3630ab23bf6fb9dc1e693ae3c53440aaca7b55fe3d4

Analysis

max time kernel
138s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16-03-2024 10:00

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General

Target

2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe
Size

47KB
MD5

e8961213188e697df2f2601505a5ef8f
SHA1

cd8e02566f530ffcf9ef457349f308d04248e7c8
SHA256

3fc57906d505bfd76350c3630ab23bf6fb9dc1e693ae3c53440aaca7b55fe3d4
SHA512

b80ca0cdae0f63a3c620d5952e03c961f54affbd64d4a043d9f2b0539fea2087507c54403de2fb83dee978909db9f1563c9e710f2c7a39484dbc5a08beffdab6
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJP5wjvaHYwiN:btB9g/xtCSKfxLIc/E1d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023211-12.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4672	gewos.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 2568 wrote to memory of 4672	2568	2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe	90
PID 2568 wrote to memory of 4672	2568	2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe	90
PID 2568 wrote to memory of 4672	2568	2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_e8961213188e697df2f2601505a5ef8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4672

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
47KB

MD5
3ffea408dd0b53aee85691a440894d24

SHA1
e360fe64ef845f6a95e13530f674e302cc9f75fb

SHA256
bddf94f0dc8e50d4e8b2cf0020e0bf475b0f9a3ea6a315d89b407851765b8873

SHA512
b36c484b892066413b308ae6cf232efbe95c4850304f5a7d86cfa9a36f97e2b98202bb924e82e89ef77b84d90187490cb8c34aeea5bda55fa1b19b20575b34b3

Download Submit
memory/2568-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2568-1-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2568-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download