b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 13:47

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General

Target

b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe
Size

49KB
MD5

6ad2f5776fe09625ccb5a5eea0d7d64d
SHA1

17e8c56657cd4cca600658d237196e5d9c89c3a8
SHA256

b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd
SHA512

0717c9df55fb79ffd7da393f909a2bf38557deead835ad90468139bf2adaa4fd976104ff94ed4de1f7a51bc0b9fa28da50721f4e3a8f5c3b34f46a45b106b47a
SSDEEP

768:CFhBP+0xcJrS5UlZW3wQc77sl9J6Mkaw4tvYb4MMmoCtpIcSMB1dGuni8FkK2Lcb:uyEPnRY054hbjU+0lIKVSHa61qalJNr

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5032	explorer.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2816	netsh.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08f4dc96bbb7af09d1a37fe35c75a42f.exe	explorer.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08f4dc96bbb7af09d1a37fe35c75a42f.exe	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\08f4dc96bbb7af09d1a37fe35c75a42f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\explorer.exe\" .."	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\08f4dc96bbb7af09d1a37fe35c75a42f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\explorer.exe\" .."	explorer.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe
5032	explorer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5032	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 5032	2316	b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe	84
PID 2316 wrote to memory of 5032	2316	b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe	84
PID 2316 wrote to memory of 5032	2316	b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe	84
PID 5032 wrote to memory of 2816	5032	explorer.exe	85
PID 5032 wrote to memory of 2816	5032	explorer.exe	85
PID 5032 wrote to memory of 2816	5032	explorer.exe	85

C:\Users\Admin\AppData\Local\Temp\b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe
"C:\Users\Admin\AppData\Local\Temp\b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\explorer.exe
  "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5032
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\explorer.exe" "explorer.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2816

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\explorer.exe

Filesize
49KB

MD5
6ad2f5776fe09625ccb5a5eea0d7d64d

SHA1
17e8c56657cd4cca600658d237196e5d9c89c3a8

SHA256
b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd

SHA512
0717c9df55fb79ffd7da393f909a2bf38557deead835ad90468139bf2adaa4fd976104ff94ed4de1f7a51bc0b9fa28da50721f4e3a8f5c3b34f46a45b106b47a

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

Filesize
49KB

MD5
6ad2f5776fe09625ccb5a5eea0d7d64d

SHA1
17e8c56657cd4cca600658d237196e5d9c89c3a8

SHA256
b1c8cd057873a08cb01893048612fdf4a108a0830eaace78c34151795d53d7fd

SHA512
0717c9df55fb79ffd7da393f909a2bf38557deead835ad90468139bf2adaa4fd976104ff94ed4de1f7a51bc0b9fa28da50721f4e3a8f5c3b34f46a45b106b47a

Download Submit
memory/2316-132-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/2316-136-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/5032-138-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/5032-139-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download