d94b15ae9d36cba9649f281f624a05bba0c6e8cad3c5729f072f9f9d0cae233c

General

Target

2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe
Size

39KB
MD5

e19c737f57ef72181cf10bbab2c1aa25
SHA1

6cab7f2b29dc999952f267285ca80ceebd0378fb
SHA256

d94b15ae9d36cba9649f281f624a05bba0c6e8cad3c5729f072f9f9d0cae233c
SHA512

05c0320d370899e78d6b2893137925da81356acba538c31deadfada525403b64e0cf62308c6548cef5a47f6bbe6a17c49951623bb2eb6dd551a742682a3a9bef
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaQZ:qDdFJy3QMOtEvwDpjjWMl7Td8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3036-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2484-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2484-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/3036-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2484-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2484-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/3036-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2484-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2484-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2484 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe

pid process

3036 2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe

pid	process
2484	asih.exe

pid	process
3036	2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/3036-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2484-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2484-27-0x0000000000500000-0x0000000000510000-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:

2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe

description	pid	process	target process
PID 3036 wrote to memory of 2484	3036	2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe	asih.exe
PID 3036 wrote to memory of 2484	3036	2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe	asih.exe
PID 3036 wrote to memory of 2484	3036	2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe	asih.exe
PID 3036 wrote to memory of 2484	3036	2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_e19c737f57ef72181cf10bbab2c1aa25_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3036

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2484

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
40KB

MD5
689ec83dabc9c5f0f2399c768444675b

SHA1
96e381e5f783e9ddf8e9e93bec69ce5cfc589e88

SHA256
e3183086da9650909ad5a756d0bbe7dfcc23887804196d1c6cd47c2a04d0250f

SHA512
b7863cb8ff75a1070fd7ea29ebcf761d620108f13dfe0822c92cb2c421b4ec7756125b40cb1c7439eda9eb497bf0727c3976d0383464e0377a20fa6552c489d2

Download Submit
memory/2484-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2484-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2484-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2484-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3036-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3036-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3036-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads