0e308ca2ec460e0e5844171ea3c4e160ac429cc8b3de84187fe5e53e13e45fb6

General

Target

2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe
Size

60KB
MD5

323f1881200878d2eaf7ba3baa0b308d
SHA1

41384c92dd7869a94c39ee7f799753704b0e9942
SHA256

0e308ca2ec460e0e5844171ea3c4e160ac429cc8b3de84187fe5e53e13e45fb6
SHA512

cd60f24a9ce6b5dc60d050da42b32118d3aeaf493cb83369047bba18f0caf66ef6c5caa4212919b102d1c1c1a6497094c31c536027b77bfa1fc36ab9db8e03e7
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaUf3X:z6a+CdOOtEvwDpjQM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3060-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3060-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3060-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3060 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe

pid process

3024 2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe

pid	process
3060	asih.exe

pid	process
3024	2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3060-27-0x0000000000500000-0x0000000000510000-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:

2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe

description	pid	process	target process
PID 3024 wrote to memory of 3060	3024	2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe	asih.exe
PID 3024 wrote to memory of 3060	3024	2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe	asih.exe
PID 3024 wrote to memory of 3060	3024	2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe	asih.exe
PID 3024 wrote to memory of 3060	3024	2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_323f1881200878d2eaf7ba3baa0b308d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3024

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3060

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
60KB

MD5
5d3cedc8fada812ed263718e6606281b

SHA1
e46b1bdec8ea345103681a9a3eb24c53bcdf11a4

SHA256
a007c50e51598989435f4254035be911c0bb67f21f7c0ba1fadf0a2956c66218

SHA512
cd6cb482ad5653f37caa5b75e4c5b7dff0e921f65dac5493b4604ee7a2951c5136e42d9f87a81b4ed70cc66dc824a7feb8f4ed6b6094784319f154337120bf95

Download Submit
memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3024-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3024-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3024-3-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3024-13-0x0000000001DE0000-0x0000000001DF0000-memory.dmp

Filesize
64KB

Download
memory/3024-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/3060-26-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/3060-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads