ef523811b3073a1c58dc0043ff061d4f00addd087131780ee6228c6187288caf

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
31/08/2023, 16:52

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General

Target

f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe
Size

92KB
MD5

f67bf274fd30b1e4b69f14fbc31d317e
SHA1

7f7ad422ac36c5585a19f5234c8e2cdb16337b22
SHA256

ef523811b3073a1c58dc0043ff061d4f00addd087131780ee6228c6187288caf
SHA512

4025741f759b7220819d8ebfe84271194428175bdc8476efb024b078aa8af4f3dee57375cd5b6f46c5675e810ae6c4edf2455a7cda4bc4ccedcd1d6e5a6f40b6
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp+ofZO:AnBdOOtEvwDpj6zh

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2464	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012029-11.dat	upx
behavioral1/memory/2224-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012029-16.dat	upx
behavioral1/memory/2464-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012029-26.dat	upx
behavioral1/memory/2464-27-0x0000000000500000-0x000000000050F000-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 2224 wrote to memory of 2464	2224	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	28
PID 2224 wrote to memory of 2464	2224	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	28
PID 2224 wrote to memory of 2464	2224	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	28
PID 2224 wrote to memory of 2464	2224	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2464

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\asih.exe

Filesize
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

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

Filesize
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

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

Filesize
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

Download Submit
memory/2224-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2224-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2224-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2224-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2224-13-0x0000000000910000-0x000000000091F000-memory.dmp

Filesize
60KB

Download
memory/2224-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2464-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2464-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2464-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2464-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download