42c8d816ea420f8e22b8a422a2b6a72075f7111f7ae6035f24d2e939a155854e

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
04/08/2023, 16:34

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General

Target

5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe
Size

88KB
MD5

5f76be883c51cff5af0007adb45ebd19
SHA1

ae8310a69ad58eb89ad5c7d98a5467d810616d8c
SHA256

42c8d816ea420f8e22b8a422a2b6a72075f7111f7ae6035f24d2e939a155854e
SHA512

7512d0866602be1cc7bea0b74c78c0ff1f3691f0a66398a4a96852f73dc1360a04b3e151d5f45f9e420de80b2a9bc1f54e2a6137782d55055ad8d1416b86e17b
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDWo:zCsanOtEvwDpjM

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2172	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2236-54-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2236-68-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120e6-65.dat	upx
behavioral1/memory/2172-70-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120e6-69.dat	upx
behavioral1/files/0x00080000000120e6-79.dat	upx
behavioral1/memory/2172-80-0x0000000000500000-0x0000000000510000-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 2236 wrote to memory of 2172	2236	5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe	28
PID 2236 wrote to memory of 2172	2236	5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe	28
PID 2236 wrote to memory of 2172	2236	5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe	28
PID 2236 wrote to memory of 2172	2236	5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2172

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
88KB

MD5
049c27f75a205b10ce9acf8c73074333

SHA1
fdcce36781b66501069ea215185c58e09657fd45

SHA256
2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

SHA512
3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

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

Filesize
88KB

MD5
049c27f75a205b10ce9acf8c73074333

SHA1
fdcce36781b66501069ea215185c58e09657fd45

SHA256
2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

SHA512
3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

Download Submit
\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
88KB

MD5
049c27f75a205b10ce9acf8c73074333

SHA1
fdcce36781b66501069ea215185c58e09657fd45

SHA256
2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

SHA512
3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

Download Submit
memory/2172-70-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2172-73-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2172-72-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2172-80-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-55-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-56-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2236-57-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-68-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download