cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c

Analysis

max time kernel
102s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 23:40

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General

Target

cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe
Size

398KB
MD5

79b5e75deeb736df7f0ba19cd150da10
SHA1

fc663899d7f772182bd594b281d46c375f128810
SHA256

cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c
SHA512

a8d7bc3a9e8241bfe5d23e80adc7a882a5b208a5f45ce4bb12f8f0044ccfe112ba9a93a97e01bbea87f5cbe3431add4f8249ad42a1dd60bcf30d2391d786a66a
SSDEEP

12288:nNj1OHJ/T62VQHeWVKAfiJTCwBmcqpFSQjEHRD:nNjiJ/22VenaJWxS6EHt

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4948	winsearch.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4860-132-0x0000000000400000-0x00000000004ED000-memory.dmp	upx
behavioral2/memory/4860-137-0x0000000000400000-0x00000000004ED000-memory.dmp	upx

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\inf\winsearch.exe	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe
File opened for modification	C:\Windows\inf\winsearch.exe	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 4948	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	83
PID 4860 wrote to memory of 4948	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	83
PID 4860 wrote to memory of 4948	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	83
PID 4860 wrote to memory of 4868	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	84
PID 4860 wrote to memory of 4868	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	84
PID 4860 wrote to memory of 4868	4860	cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe	84

C:\Users\Admin\AppData\Local\Temp\cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe
"C:\Users\Admin\AppData\Local\Temp\cc8fc2fb4c988ffbc12b4fbf6d8a75946f1ac50765c7262921f5bb9793b29b9c.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\inf\winsearch.exe
  "C:\Windows\inf\winsearch.exe" /install /SILENT
  2⤵
  - Executes dropped EXE
  PID:4948
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c iesearch.exe_deleteme.bat
  2⤵
  PID:4868

Network

MITRE ATT&CK Enterprise v6

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\iesearch.exe_deleteme.bat

Filesize
68B

MD5
8bc41704d7aa12952b84d391246e1bb7

SHA1
59d6d43e9ee2f8a011ccd62860d75ba931b56dea

SHA256
ac5bddf8ded3846f9de7c56d9d4cdbb37f6aa2af05bd09c58a071be685aa46e8

SHA512
f91d825cec6b6ea18853ad3df7cba18d0c266ce69dd3a16fd50eebb7a5cf2b9f25cd154a632ec9baff71d918adf2b4055325b53736edfd431887619451bd31dc

Download Submit
C:\Windows\INF\winsearch.exe

Filesize
820KB

MD5
5daa653cad02a4d3a9217dba46e0f6ef

SHA1
0866cbc79288a186305385fb7108e9d1eb07e11b

SHA256
9bd815788b4fc3f6e798c2a5fec6587a3714e17ac09d900c99ddb0d59dbdb73b

SHA512
979b02b233fe20f21666f9882bf5de79f8125d8120c25498c83cb803f505b01143e0e8c07b1cc80fbd7d7e4c476db5d57242487e0973a5348ee0ae01cf4e8fcb

Download Submit
C:\Windows\inf\winsearch.exe

Filesize
820KB

MD5
5daa653cad02a4d3a9217dba46e0f6ef

SHA1
0866cbc79288a186305385fb7108e9d1eb07e11b

SHA256
9bd815788b4fc3f6e798c2a5fec6587a3714e17ac09d900c99ddb0d59dbdb73b

SHA512
979b02b233fe20f21666f9882bf5de79f8125d8120c25498c83cb803f505b01143e0e8c07b1cc80fbd7d7e4c476db5d57242487e0973a5348ee0ae01cf4e8fcb

Download Submit
memory/4860-132-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download
memory/4860-137-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download