b45396e0b6ab277e2313d53291a3ab0a574ab0a183f8727650d423e8cf6d7b78

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 05:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe
Size

56KB
MD5

0931e1c97e2e0b95047f5a780e5a2e4f
SHA1

9f859acfa78232415b7a1b589e27744126c2ae2f
SHA256

b45396e0b6ab277e2313d53291a3ab0a574ab0a183f8727650d423e8cf6d7b78
SHA512

13f86f0e2c6abdee741ff234c18d24d6d48d1493f37c235f1fe0fff0f766c8bb452a2c2c3551893e6585e0e9dbde09738c18c82532a7242dddb540688f79717e
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlYRM:bP9g/xtCS3Dxx0Lm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001226d-11.dat	CryptoLocker_rule2
behavioral1/memory/2980-16-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000c00000001226d-11.dat	UPX
behavioral1/memory/2980-16-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2980	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000c00000001226d-11.dat	upx
behavioral1/memory/2980-16-0x0000000000400000-0x000000000040E000-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 UnmapMainImage 2 IoCs

pid	Process
1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe
2980	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2980	1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe	28
PID 1976 wrote to memory of 2980	1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe	28
PID 1976 wrote to memory of 2980	1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe	28
PID 1976 wrote to memory of 2980	1976	2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_0931e1c97e2e0b95047f5a780e5a2e4f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2980

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

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

Filesize
56KB

MD5
8812d43b9c83b939ca37fc6085fbfbf1

SHA1
62c2ee332fb864f16437f6593241495feba2ae30

SHA256
a0626cbd0b274701acb17940925cdaeb8fdc79aa887d5269b5773bbeaa974804

SHA512
8697922e25e34850e50fd2b32acd40ca1b66d104a6481ed7ec346da58b1b33402d9f9e7fa367009d2d212036522eadcbca835101b3962e872b71a522d77abc14

Download Submit
memory/1976-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1976-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2980-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2980-25-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download