a9eb9faab302f8da14601c00d1cf470da88d534d017632e3100af2517d11841b

General

Target

2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe
Size

38KB
MD5

0b44809b720c36f2c5f2f21dc819ae64
SHA1

5bf6b2e4afe926b2df6124fea930a443c154499f
SHA256

a9eb9faab302f8da14601c00d1cf470da88d534d017632e3100af2517d11841b
SHA512

e4712f2cf8558ca055b5778747f6272c317099702c4158c51635d90c8c8f04c455a1bf9e46824ef7f798e61b4f5dbf6e5e9da4fdeb8f896e4e58be18b57bc5fa
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYab1:qDdFJy3QMOtEvwDpjjWMl7TdJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2328-13-0x00000000006E0000-0x00000000006F0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2848-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2328-13-0x00000000006E0000-0x00000000006F0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2848-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2328-13-0x00000000006E0000-0x00000000006F0000-memory.dmp	UPX
behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2848-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2848 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe

pid process

2328 2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe

pid	process
2848	asih.exe

pid	process
2328	2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2328-13-0x00000000006E0000-0x00000000006F0000-memory.dmp	upx
behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2848-27-0x0000000000500000-0x0000000000510000-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:

2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe

description	pid	process	target process
PID 2328 wrote to memory of 2848	2328	2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe	asih.exe
PID 2328 wrote to memory of 2848	2328	2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe	asih.exe
PID 2328 wrote to memory of 2848	2328	2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe	asih.exe
PID 2328 wrote to memory of 2848	2328	2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_0b44809b720c36f2c5f2f21dc819ae64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2328

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2848

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
39KB

MD5
e5efca0d8fbb344a938068d16f0c33ed

SHA1
7bb2c58177dbcdd3e645990076fe790275942d16

SHA256
18c7f614022c258ac85078a614008e7938c80e5a26b703258a70e6e2c19ebf05

SHA512
0b95bec36273e4ca79dca48cb24779fdbef0f244c0e3d6a823fcc5258d22bbbd476df95d7593dbf95aeb19a17c154645e69b821929cd2d19c521236c427864be

Download Submit
memory/2328-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2328-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2328-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2328-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2328-13-0x00000000006E0000-0x00000000006F0000-memory.dmp

Filesize
64KB

Download
memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2848-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads