e3e10923b4fdffad48da009a0bb0800dbf5510f9cf7c0023b35c8f881ae77513

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 04:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe
Size

57KB
MD5

7cb0e5c403aad7b9db6efd1703835569
SHA1

69a3000d6c36898f899d64c8677ce600d214da7c
SHA256

e3e10923b4fdffad48da009a0bb0800dbf5510f9cf7c0023b35c8f881ae77513
SHA512

50547956e9393524f45239d2172589f70da11149873002545049f36818a64f4c7c16328ec4ac94873c8d59757a885ba137ab25a848004175c5597198c9b0457f
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgzz:bP9g/xtCS3Dxx0nz

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f00000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/2992-16-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000f00000001227e-11.dat	UPX
behavioral1/memory/2992-16-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2992	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000f00000001227e-11.dat	upx
behavioral1/memory/2992-16-0x0000000000400000-0x000000000040E000-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
3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe
2992	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2992	3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe	28
PID 3016 wrote to memory of 2992	3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe	28
PID 3016 wrote to memory of 2992	3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe	28
PID 3016 wrote to memory of 2992	3016	2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_7cb0e5c403aad7b9db6efd1703835569_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3016
- 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:2992

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
58KB

MD5
a67a342fd8fb879eeb7f70723584bb21

SHA1
eb9b5ae22eb82dde8c800ae7a132f1cac3555b63

SHA256
8eef06d98793b164d72a1c26e5d97c4bd5ec80d4c66c813ebbb1f768692058d1

SHA512
c0a4ae116b1689c01260a164c5d0757a9fcb8533daa3f88600bf48baef8b7921a08ace2a2901457533d389588a3f110daca4a00c11ece7b6951b248bb6977de1

Download Submit
memory/2992-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2992-25-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/3016-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3016-1-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/3016-9-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/3016-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download