6f7f3297ab897d2e76cc6cc5090f33ab7fea9e225192817cddb735c5b87eafa9

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 03:42

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General

Target

2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe
Size

22KB
MD5

81b63f2c8839eb1b979be08272fa6a92
SHA1

5f7bd50cc0599cfa9371c4fca3e92e7f6eed0fa7
SHA256

6f7f3297ab897d2e76cc6cc5090f33ab7fea9e225192817cddb735c5b87eafa9
SHA512

06cf640970c65a63c714990469315f461afe4275715372f97b52a79e082e131015dd5897267ad57bc678c399ae921368b3654cf04a19c4baad5c3f85c2cd2253
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMT:bVCPwFRo6CpwXFXSqQXfjAsT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012279-11.dat	CryptoLocker_rule2
behavioral1/memory/2056-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2076-16-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2056-26-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/files/0x000c000000012279-11.dat	UPX
behavioral1/memory/2056-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2076-16-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2056-26-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2056	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2076	2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2076-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000c000000012279-11.dat	upx
behavioral1/memory/2056-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2076-16-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2056-26-0x0000000008000000-0x000000000800E000-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 2076 wrote to memory of 2056	2076	2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe	28
PID 2076 wrote to memory of 2056	2076	2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe	28
PID 2076 wrote to memory of 2056	2076	2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe	28
PID 2076 wrote to memory of 2056	2076	2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_81b63f2c8839eb1b979be08272fa6a92_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2056

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

\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
23KB

MD5
3aa86e580682f9ec870df728b963f777

SHA1
f67cfe3943ab6e3f0193799a1ff4b0708823519f

SHA256
be98a87756dd5913074289b33cb68a02ef0af6d2ec94515bae09f7e5895edcf6

SHA512
f2b7b8f9fb292b8c07569c79ec5041e508c98aeb64c7b251bdd9592537a2b1901d718e15ce4732041b649e3478ac273c4763d89de70540202db13c19e6a6bf65

Download Submit
memory/2056-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2056-19-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2056-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2076-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2076-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2076-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2076-8-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2076-16-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download