b54a13a18be11a7c1e03a31307cb81e1ed2bc54c8586e6a400943d0538ee2a20

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 16:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe
Size

57KB
MD5

8b5353dfe12318639347f90d496f71ad
SHA1

ceaa6b832593a6f1b3602b897e263abb49c19d2f
SHA256

b54a13a18be11a7c1e03a31307cb81e1ed2bc54c8586e6a400943d0538ee2a20
SHA512

c87c8444a644bc3fec18402d11dbf357da0a1f49ba61b02e010a32db4f3f506868262c9fd1c3dfc069bb61c228dd6bdbc9df74c2cadaa846b6fc5747c381d958
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHx:btng54SMLr+/AO/kIhfoKMHdY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012247-23.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2776	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe
2776	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2776	2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe	1
PID 2916 wrote to memory of 2776	2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe	1
PID 2916 wrote to memory of 2776	2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe	1
PID 2916 wrote to memory of 2776	2916	2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe	1

C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
1⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2776

C:\Users\Admin\AppData\Local\Temp\2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_8b5353dfe12318639347f90d496f71ad_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
57KB

MD5
192cd97b9edc9e13daf86645fe35948f

SHA1
446da3a1f327db611dd4bb419346c7f290e1034b

SHA256
7187b17060f6bcdb20d0026b5d20ed59c463ea1d82ebc808e81bb364bafb79a0

SHA512
95c3442e0b3e115099cf55c8b706fdf8d1ebf43f64989e347ed9cab23df8df8db02dddafd85010cba322663cf19b240a06c23966a1ab713cde60ce2ea1fb4e2f

Download Submit
memory/2776-18-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2916-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2916-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download