dee5cdd41a74346fc5df51ca96e8e1a0d2b3d8ad945e97739eff9b919667770d

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
30/05/2024, 21:34

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General

Target

2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe
Size

24KB
MD5

b005f9ff9539cc8f94d65740e0334a64
SHA1

7bb45b69cf395f6d936a8c710caf5cabcae72319
SHA256

dee5cdd41a74346fc5df51ca96e8e1a0d2b3d8ad945e97739eff9b919667770d
SHA512

a9de15539002a891e1b0c43017f91cb87ff07eecdf4b8a423bfd288665d7a5d9287fdd1554851041f6dcba4f4760de17c1054ce548b4f3619a386f64fb8dbc39
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMmHBdaT:bVCPwFRo6CpwXFXSqQXfjAsmHBdG

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/756-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000149f5-11.dat	CryptoLocker_rule2
behavioral1/memory/756-13-0x0000000002FA0000-0x0000000002FAE000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/756-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2184-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/756-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/files/0x000b0000000149f5-11.dat	UPX
behavioral1/memory/756-13-0x0000000002FA0000-0x0000000002FAE000-memory.dmp	UPX
behavioral1/memory/756-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2184-27-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2184	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
756	2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/756-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000b0000000149f5-11.dat	upx
behavioral1/memory/756-13-0x0000000002FA0000-0x0000000002FAE000-memory.dmp	upx
behavioral1/memory/756-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2184-27-0x0000000008000000-0x000000000800E000-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 756 wrote to memory of 2184	756	2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe	28
PID 756 wrote to memory of 2184	756	2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe	28
PID 756 wrote to memory of 2184	756	2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe	28
PID 756 wrote to memory of 2184	756	2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_b005f9ff9539cc8f94d65740e0334a64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:756
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2184

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
24KB

MD5
e1884340cd34e7a8d09d731a4784b4c2

SHA1
a71810e5da609fe3c9d71b97db2c0fe1411599d6

SHA256
5425b24e260d5825643d4ad332d7fb7ac46761b73313df7269f08df4e9af9da5

SHA512
1a38175b377a4cb50c9ae7ba9dbbdbcb46a4066b8cb792b18329faf33f93e55b3609593da0f6b770df4153506cc59a81b6e0b7b5dc073c7a4672578d443400d2

Download Submit
memory/756-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/756-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/756-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/756-8-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/756-13-0x0000000002FA0000-0x0000000002FAE000-memory.dmp

Filesize
56KB

Download
memory/756-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2184-19-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2184-26-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2184-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download