79f42e0dc97d34d8a4880dc2814bf2f978c55a64c5fb20eae316bdab9738f04c

General

Target

2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe
Size

60KB
MD5

2d7da028c08fc9ff4d119505bb5983c4
SHA1

7f05ef63e1beda3fe41970410be4363a6faaf609
SHA256

79f42e0dc97d34d8a4880dc2814bf2f978c55a64c5fb20eae316bdab9738f04c
SHA512

a71a0426dd299a8583a8040d356742a1d554e123f872bc3c3b4e037e8965b0b4679664927282c7a50999bfda39a4fb3efffcb47b54f4e50e947dae48f778855a
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaUf3N:z6a+CdOOtEvwDpjQq

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1824-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1824-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2424-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2424-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1824-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1824-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2424-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2424-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1824-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1824-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2424-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2424-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2424 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe

pid process

1824 2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe

pid	process
2424	asih.exe

pid	process
1824	2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1824-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1824-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2424-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2424-26-0x0000000000500000-0x0000000000510000-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_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe

description	pid	process	target process
PID 1824 wrote to memory of 2424	1824	2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe	asih.exe
PID 1824 wrote to memory of 2424	1824	2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe	asih.exe
PID 1824 wrote to memory of 2424	1824	2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe	asih.exe
PID 1824 wrote to memory of 2424	1824	2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_2d7da028c08fc9ff4d119505bb5983c4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1824

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2424

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
61KB

MD5
52da76f31122c3d6f99dcc2501ce7968

SHA1
54203c43fd1701f2623c5c52db522a007f766d6e

SHA256
4719307797223494ac888c1eb86cc7596a103a6fb3a9f0d96f76aeb06de30ea5

SHA512
2e6ad07c3906c75fe4da2c829e88624f729072c6ddedc63d3268d4cae5a3a8fc6ebc19f98fd23ca3ce1ba8328d13191c93ab7d64f8f676c2fb9d302d29579ea9

Download Submit
memory/1824-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1824-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1824-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1824-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1824-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2424-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2424-25-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2424-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2424-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads