61b9e13228ee69d109af0ae977549469061176b1710a70dcc7bd1a912522e785

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 11:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
Size

76KB
MD5

4917b04e5b35abb6a0c881fea3af9561
SHA1

66b1ee7dd0d4a17a8ba02ca835aad54b01f3f05d
SHA256

61b9e13228ee69d109af0ae977549469061176b1710a70dcc7bd1a912522e785
SHA512

429f7ec6f7437299eff27a8744b906c5239e21e0f8fd216fffb51f2a573e1a2cd8cf1ae1e993bd072f765590a15d8312cb0dd31c66742bdb1205a26eaa8f47f4
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81Gj:1nK6a+qdOOtEvwDpjC

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000013a84-11.dat	CryptoLocker_rule2
behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000013a84-11.dat	CryptoLocker_set1
behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000d000000013a84-11.dat	UPX
behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2332	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000d000000013a84-11.dat	upx
behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-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 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2332	1704	2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe	28
PID 1704 wrote to memory of 2332	1704	2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe	28
PID 1704 wrote to memory of 2332	1704	2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe	28
PID 1704 wrote to memory of 2332	1704	2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2332

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\asih.exe

Filesize
76KB

MD5
d67f70a64a7715053642a26612820e03

SHA1
70d461dd07d606ecbddd1b0cd7e2da441669e8fb

SHA256
354fcba1d68a87be5e55daaa7fb769b7de5d52b82bf5a045328fbcdf90042095

SHA512
80b262fd70cb7821c6c2dc9a1d1fc807bb4b8e6167ccdba53400d399db6bee33a60d5228e9ad499622d6677c7aed6d1c8ab5e93452d480bab3162bbe80835ba9

Download Submit
memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1704-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1704-3-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1704-14-0x0000000002480000-0x0000000002490000-memory.dmp

Filesize
64KB

Download
memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2332-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download