971f5c1582afe814e05ca9fb8c4d1cd6349c5c6b7696cf91eedd603881e55132

Analysis

max time kernel
139s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2023, 01:32

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General

Target

2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe
Size

71KB
MD5

3d1dfb8f2c2557c5de609412d2c36fee
SHA1

930be0f343c09cf02ee7ece599b0879601a0bb3b
SHA256

971f5c1582afe814e05ca9fb8c4d1cd6349c5c6b7696cf91eedd603881e55132
SHA512

1ff66f8d6d9690a1a505da911e5bfd5381444a936b99e6ac178576d23e16ff2f9e2e123b664f3ac6ee2184b0827102c2a5ab8899020b0f7d476c111496bcc0ee
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdI:T6a+rdOOtEvwDpjNtK

Score

7^/10

upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
5000	asih.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3140-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3140-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000200000002281a-14.dat	upx
behavioral2/files/0x000200000002281a-16.dat	upx
behavioral2/files/0x000200000002281a-17.dat	upx
behavioral2/memory/3140-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5000-27-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 5000	3140	2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe	88
PID 3140 wrote to memory of 5000	3140	2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe	88
PID 3140 wrote to memory of 5000	3140	2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe	88

C:\Users\Admin\AppData\Local\Temp\2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_3d1dfb8f2c2557c5de609412d2c36fee_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
71KB

MD5
cf2b36353055190cc45ba714541a49e7

SHA1
3e0cb0b54247be8f573d372baf08a14e23c0a3e9

SHA256
f0dc086f9a567bc481d54f5eb3559b416dde97876f7632a06e6eeaee0eab9b3a

SHA512
892e6106c597c3fdb30c56e39ca1e629cd6b0ab23513aa780f8e8d331d4edce0c1a98a68233b3e652a46a37924eaa5a92999c2bcb1a4ccf209526d9469143283

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

Filesize
71KB

MD5
cf2b36353055190cc45ba714541a49e7

SHA1
3e0cb0b54247be8f573d372baf08a14e23c0a3e9

SHA256
f0dc086f9a567bc481d54f5eb3559b416dde97876f7632a06e6eeaee0eab9b3a

SHA512
892e6106c597c3fdb30c56e39ca1e629cd6b0ab23513aa780f8e8d331d4edce0c1a98a68233b3e652a46a37924eaa5a92999c2bcb1a4ccf209526d9469143283

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

Filesize
71KB

MD5
cf2b36353055190cc45ba714541a49e7

SHA1
3e0cb0b54247be8f573d372baf08a14e23c0a3e9

SHA256
f0dc086f9a567bc481d54f5eb3559b416dde97876f7632a06e6eeaee0eab9b3a

SHA512
892e6106c597c3fdb30c56e39ca1e629cd6b0ab23513aa780f8e8d331d4edce0c1a98a68233b3e652a46a37924eaa5a92999c2bcb1a4ccf209526d9469143283

Download Submit
memory/3140-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3140-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3140-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3140-3-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3140-4-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3140-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5000-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5000-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/5000-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download