dde4c6dbe00dd8e8b6bb0542f8eb4969823d37bfaa4f3dc927c203e40235a9c3

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
22/08/2023, 15:13

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General

Target

67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe
Size

108KB
MD5

67b2b97399c2c104ef3cde9548e8e87a
SHA1

c87c687d21621192a29f2f995fc0b706d22b53c6
SHA256

dde4c6dbe00dd8e8b6bb0542f8eb4969823d37bfaa4f3dc927c203e40235a9c3
SHA512

e768c8ee5f68d6a07a11624c502b0ffe0c46310f36c780f171050c2f57b55815e80da1bc816aa2d28f76a23bc534bf063cd24d2a0ef54f36f30d978921891774
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgp3r:T6a+rdOOtEvwDpjLzK

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2088	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2636	67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2636-54-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2636-68-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001201e-65.dat	upx
behavioral1/memory/2088-70-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001201e-69.dat	upx
behavioral1/files/0x000d00000001201e-78.dat	upx
behavioral1/memory/2088-79-0x0000000000500000-0x0000000000510000-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 2636 wrote to memory of 2088	2636	67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe	28
PID 2636 wrote to memory of 2088	2636	67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe	28
PID 2636 wrote to memory of 2088	2636	67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe	28
PID 2636 wrote to memory of 2088	2636	67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\67b2b97399c2c104ef3cde9548e8e87a_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2088

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
108KB

MD5
03c6fe668d1e74afcfcdce9e90079168

SHA1
2c35fbea8ca2523d1f011e6f99b7f61e5101c925

SHA256
cf273f8e3a104ba908057225fd5c2a62b3d1c88bd7f4007235ef6eb5ef8d0c47

SHA512
a1cc7db2defddf9ea0d0da2ef705d0174789135f4356a5780fa2b92440dca2a03f078ebd6b478d98a9744ec72cce3482faf42f8d6f0979f485f5acce8057a924

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

Filesize
108KB

MD5
03c6fe668d1e74afcfcdce9e90079168

SHA1
2c35fbea8ca2523d1f011e6f99b7f61e5101c925

SHA256
cf273f8e3a104ba908057225fd5c2a62b3d1c88bd7f4007235ef6eb5ef8d0c47

SHA512
a1cc7db2defddf9ea0d0da2ef705d0174789135f4356a5780fa2b92440dca2a03f078ebd6b478d98a9744ec72cce3482faf42f8d6f0979f485f5acce8057a924

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

Filesize
108KB

MD5
03c6fe668d1e74afcfcdce9e90079168

SHA1
2c35fbea8ca2523d1f011e6f99b7f61e5101c925

SHA256
cf273f8e3a104ba908057225fd5c2a62b3d1c88bd7f4007235ef6eb5ef8d0c47

SHA512
a1cc7db2defddf9ea0d0da2ef705d0174789135f4356a5780fa2b92440dca2a03f078ebd6b478d98a9744ec72cce3482faf42f8d6f0979f485f5acce8057a924

Download Submit
memory/2088-70-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2088-79-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2636-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2636-55-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2636-57-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2636-56-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2636-68-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download