5aaa8bcdefd13b69f711e30c93b4f78e6c29a7457ae8b6a39463f6d7649c3832

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
27/08/2023, 17:51

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General

Target

b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe
Size

62KB
MD5

b821e013a4965db3191b83f31cfcc52e
SHA1

208a5a7fedba884bccd9b6a677e971fd819221ec
SHA256

5aaa8bcdefd13b69f711e30c93b4f78e6c29a7457ae8b6a39463f6d7649c3832
SHA512

673f1690dfcdafe279f67df8f3cb0a49b12a49dc80edf50abc302cfc13647458db7f56d9a7b91867f7ef19dba7864b7df7fdb16a3dab339abc87e8a03110c076
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHwGo:1nK6a+qdOOtEvwDpjmo

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2832	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2804	b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0008000000012023-11.dat	upx
behavioral1/memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2832-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0008000000012023-16.dat	upx
behavioral1/files/0x0008000000012023-25.dat	upx
behavioral1/memory/2832-27-0x0000000000500000-0x000000000050F311-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 2804 wrote to memory of 2832	2804	b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe	28
PID 2804 wrote to memory of 2832	2804	b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe	28
PID 2804 wrote to memory of 2832	2804	b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe	28
PID 2804 wrote to memory of 2832	2804	b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b821e013a4965db3191b83f31cfcc52e_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2832

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
62KB

MD5
8bd297cab2a0cc2d8ef1ec99b4d8177b

SHA1
d074ceec28619b4df157cf8644cfe3cc9dc41ece

SHA256
cf6150f10ca0708d262da595f91e0ca29f1f755879d4e8bf0205e3f8c4ffb5db

SHA512
0cac1d28bb9502831a97bc717bc7cc57cb1d81605071e493ba482434149439c171c19b86ed37a520ac99670d59ae05019e8f577aa1581176002318f093761ed5

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

Filesize
62KB

MD5
8bd297cab2a0cc2d8ef1ec99b4d8177b

SHA1
d074ceec28619b4df157cf8644cfe3cc9dc41ece

SHA256
cf6150f10ca0708d262da595f91e0ca29f1f755879d4e8bf0205e3f8c4ffb5db

SHA512
0cac1d28bb9502831a97bc717bc7cc57cb1d81605071e493ba482434149439c171c19b86ed37a520ac99670d59ae05019e8f577aa1581176002318f093761ed5

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

Filesize
62KB

MD5
8bd297cab2a0cc2d8ef1ec99b4d8177b

SHA1
d074ceec28619b4df157cf8644cfe3cc9dc41ece

SHA256
cf6150f10ca0708d262da595f91e0ca29f1f755879d4e8bf0205e3f8c4ffb5db

SHA512
0cac1d28bb9502831a97bc717bc7cc57cb1d81605071e493ba482434149439c171c19b86ed37a520ac99670d59ae05019e8f577aa1581176002318f093761ed5

Download Submit
memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2804-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2804-3-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2804-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2804-14-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2804-26-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2832-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2832-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download