3973676bd47470c6a5a2c391ecd2c55664dfd6f39c64fb52a25ccdda9149e7fa

General

Target

2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe
Size

60KB
MD5

c752ce9e8f582a88c7477b168eccd25b
SHA1

47da5acef84640116ec7a70f3c929080204b0de1
SHA256

3973676bd47470c6a5a2c391ecd2c55664dfd6f39c64fb52a25ccdda9149e7fa
SHA512

4f1be7122e1b1c968a88df2b9d063b744caa3cb2a4fa3d8f34e2d202c139282db7d95a444723a34d0f2cea4bd3167f3a6563fcd549129726bda3e72bfea874ae
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pr:H6QFElP6n+gou9cvMOtEvwDpjCpVXl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2868-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2868-13-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2868-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2928-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2868-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2868-13-0x0000000000670000-0x0000000000680000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2868-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2928-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2868-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2868-13-0x0000000000670000-0x0000000000680000-memory.dmp	UPX
behavioral1/memory/2868-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2928-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2928 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe

pid process

2868 2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe

pid	process
2928	asih.exe

pid	process
2868	2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2868-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2868-13-0x0000000000670000-0x0000000000680000-memory.dmp	upx
behavioral1/memory/2868-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2928-27-0x0000000000500000-0x0000000000510000-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_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe

description	pid	process	target process
PID 2868 wrote to memory of 2928	2868	2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe	asih.exe
PID 2868 wrote to memory of 2928	2868	2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe	asih.exe
PID 2868 wrote to memory of 2928	2868	2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe	asih.exe
PID 2868 wrote to memory of 2928	2868	2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_c752ce9e8f582a88c7477b168eccd25b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2868

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2928

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
25e8906a517d8c470b17673ddf5e141d

SHA1
caf9095806ba07189ef110c451254cb52b2bc43d

SHA256
559db29a676c90bbd5c1f5915fbb951cc51682babac966962df9e1a0c763a21c

SHA512
bfce7731b1ab187ff6083595b47c1523eceb53d9466df5bc8fd384da419f36d963f3bd068f65cb9daa89b8022d910f061fadf36a1b79330dd96f950f1f1560c5

Download Submit
memory/2868-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2868-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2868-9-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-13-0x0000000000670000-0x0000000000680000-memory.dmp

Filesize
64KB

Download
memory/2868-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2928-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2928-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2928-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2928-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads