8b7e3dee38274698783d4965c7a57fee067c146d2eb04007b7d3bb90b73fa5e4

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
08/08/2023, 16:37

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General

Target

99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe
Size

55KB
MD5

99febf5fff40edd901e7b203c6575766
SHA1

fc424a9d69d7e3ceeb8094a985a68d37d4f1146a
SHA256

8b7e3dee38274698783d4965c7a57fee067c146d2eb04007b7d3bb90b73fa5e4
SHA512

47d0a101105fd52e79f75bf687f3bb0610a7cfc478a38aba69a68f0c00a582e31577efc0ccb2eac549db09dac551af97d9a45b03054c5a265c9bc2dbc91f2670
SSDEEP

768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLaBZoir4KtdOI:T6QFElP6n+gxmddpMOtEvwDpjwa3TtX

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
544	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2532	99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2532-53-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012022-67.dat	upx
behavioral1/memory/2532-68-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012022-64.dat	upx
behavioral1/memory/544-70-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012022-79.dat	upx
behavioral1/memory/544-81-0x0000000000500000-0x0000000000510000-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 2532 wrote to memory of 544	2532	99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe	28
PID 2532 wrote to memory of 544	2532	99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe	28
PID 2532 wrote to memory of 544	2532	99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe	28
PID 2532 wrote to memory of 544	2532	99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\99febf5fff40edd901e7b203c6575766_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:544

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
55KB

MD5
33c2b77ac948e609a79c1cbdd8e9862e

SHA1
fc0f7f9819cd2fbf30cac139d7facd4ec9308c40

SHA256
e727d5cf6514a17f978b1e653eb4352fe17a1fdaccbddd30d68b36f83a97f4bb

SHA512
c038abca90849398ac84806c10d6c45262033a28b5de7bb9b10d0697c806ee2f769b76ec4da272fa1a6486f9959bfcf68975335b594a16c5243f81a26cd07c9b

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

Filesize
55KB

MD5
33c2b77ac948e609a79c1cbdd8e9862e

SHA1
fc0f7f9819cd2fbf30cac139d7facd4ec9308c40

SHA256
e727d5cf6514a17f978b1e653eb4352fe17a1fdaccbddd30d68b36f83a97f4bb

SHA512
c038abca90849398ac84806c10d6c45262033a28b5de7bb9b10d0697c806ee2f769b76ec4da272fa1a6486f9959bfcf68975335b594a16c5243f81a26cd07c9b

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

Filesize
55KB

MD5
33c2b77ac948e609a79c1cbdd8e9862e

SHA1
fc0f7f9819cd2fbf30cac139d7facd4ec9308c40

SHA256
e727d5cf6514a17f978b1e653eb4352fe17a1fdaccbddd30d68b36f83a97f4bb

SHA512
c038abca90849398ac84806c10d6c45262033a28b5de7bb9b10d0697c806ee2f769b76ec4da272fa1a6486f9959bfcf68975335b594a16c5243f81a26cd07c9b

Download Submit
memory/544-81-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/544-72-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/544-73-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/544-70-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-55-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2532-69-0x0000000000680000-0x0000000000690000-memory.dmp

Filesize
64KB

Download
memory/2532-68-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-53-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-56-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2532-80-0x0000000000680000-0x0000000000690000-memory.dmp

Filesize
64KB

Download
memory/2532-54-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download