4f845bb9ede38150b16345687dd915f0f8a01b34d8d98208b85494ebc902683c

General

Target

2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe
Size

53KB
MD5

69f988830aa93a9306b94756b32ca99f
SHA1

8e9f5c1e8550b7dcb6ec498fc083cb80fda34663
SHA256

4f845bb9ede38150b16345687dd915f0f8a01b34d8d98208b85494ebc902683c
SHA512

73a89882ba080bba868527f203c989444a9ab598323d181a6847b32e64a3f1cbdff5ff0b715f756fdbdf2a4da975d098a3e67cb7c178428f7ceea4bc771b361b
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTO4:z6QFElP6n+gKmddpMOtEvwDpj31i4

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2444 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe

pid process

2960 2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe

pid	process
2444	asih.exe

pid	process
2960	2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe

description	pid	process	target process
PID 2960 wrote to memory of 2444	2960	2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe	asih.exe
PID 2960 wrote to memory of 2444	2960	2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe	asih.exe
PID 2960 wrote to memory of 2444	2960	2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe	asih.exe
PID 2960 wrote to memory of 2444	2960	2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_69f988830aa93a9306b94756b32ca99f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
53KB

MD5
99ae4070c9b6ea758ed980eb5ba294f5

SHA1
b175ff1a9a227368f9c611b2e52635661151f6fc

SHA256
28fff6830a472562a20a599b817e5ca6a6381bede1d6c5547801844487783903

SHA512
e0a2743f825211df7b36cd973cfb12ec9db970ad8c6cede1cfd0472473a44dc6e1979f3fd11baa7c7ae05a4ec18d8e9eb54d7c3122b0987600c3325b08738659

Download Submit
memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2444-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2444-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2960-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2960-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads