6d2ab12fcfe043fff97ce6163352d3f662056564340d084a9c99a797136489c0

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 19:24

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General

Target

2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe
Size

55KB
MD5

14c4588985ad64d02e9dfdfd199af531
SHA1

a2e8151a3c81d3592ca09288eafc289c5fbe1b16
SHA256

6d2ab12fcfe043fff97ce6163352d3f662056564340d084a9c99a797136489c0
SHA512

bf24515268b75dfe6cfad1f449984284dc5435ff4c2c2d1cbc83a7bd9fad07ffa98da1267900765c71cf90594f3ba115fd09fdd670adfabd2d2d5ca7b4dadf53
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+SZ:bP9g/xtCS3Dxx0JSZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1184-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023b10-13.dat	CryptoLocker_rule2
behavioral2/memory/3488-19-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/memory/1184-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral2/files/0x000d000000023b10-13.dat	UPX
behavioral2/memory/3488-19-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	gewos.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1184-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000d000000023b10-13.dat	upx
behavioral2/memory/3488-19-0x0000000000400000-0x000000000040E000-memory.dmp	upx

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 1184 wrote to memory of 3488	1184	2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe	84
PID 1184 wrote to memory of 3488	1184	2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe	84
PID 1184 wrote to memory of 3488	1184	2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_14c4588985ad64d02e9dfdfd199af531_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - 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\gewos.exe

Filesize
55KB

MD5
87884386b5ee4628e96669b1a11774ba

SHA1
1e0a7a8abb497d2d7e9a4742ea78fb2a7fabc538

SHA256
4e63d930b84a5298ab7ad1c1edb8848f65459455a22328d98c69d16b2eb7a0e6

SHA512
7f8b5d369b8f94e3e3cb472cbd76d27a0adbb42f93cd35cdd11822e0394efe308865cb4615b3da5ded4c1517df403c3b6936cb2417a8d0c03f62984b08ebaec1

Download Submit
memory/1184-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1184-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1184-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1184-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3488-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3488-27-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download