31a89418a9155b8121ba290ab50182d0ced62701ca729d59fae6112c54229e74

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 18:48

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General

Target

2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe
Size

62KB
MD5

d2eeadf2a312b9ad5dbb0c1119aa28a1
SHA1

9d5f543ae3eca10c3c96b035dc43d5c331406a7e
SHA256

31a89418a9155b8121ba290ab50182d0ced62701ca729d59fae6112c54229e74
SHA512

1b70112324ea8170cd1d6728d3940bd0c6b09798e0521c4c228bc25048abed4b8375df591d5203974074266b8609038e3112c10a10bfce7f0757df7e6c17da76
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnV9:zj+soPSMOtEvwDpj4kpmeLmnX

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012185-24.dat	CryptoLocker_rule2
behavioral1/memory/3028-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012185-24.dat	CryptoLocker_set1
behavioral1/memory/3028-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2828-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012185-24.dat	UPX
behavioral1/memory/3028-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2828-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2828	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
3028	2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b000000012185-24.dat	upx
behavioral1/memory/3028-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2828-25-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 3028 wrote to memory of 2828	3028	2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe	1
PID 3028 wrote to memory of 2828	3028	2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe	1
PID 3028 wrote to memory of 2828	3028	2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe	1
PID 3028 wrote to memory of 2828	3028	2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe	1

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
1⤵
- Executes dropped EXE
PID:2828

C:\Users\Admin\AppData\Local\Temp\2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_d2eeadf2a312b9ad5dbb0c1119aa28a1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
62KB

MD5
175393032b175552d08244ea352fb519

SHA1
8799b281a1e454f52cfa7dfb8f35fd5d0231d474

SHA256
09ee2ca5956f9866cb1e8e68fad358f3e42acbd4bd3fe9dce39f70f9946e6e9e

SHA512
1326d2364c3557c9e391b382318eb2c21355c5c9cf7e833c2e1569ee2ca37f5dadbad8b838feb109c15fc0f31757f7a1b2cd80cf15e1c175aa3e78796349efff

Download Submit
memory/2828-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2828-17-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2828-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3028-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3028-3-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/3028-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download