bd7cb674391cf7779570544ce2b38ab9af123d2e5b3d00bc2e531e0527c04bf4

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20-12-2023 03:19

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General

Target

Un_A.exe
Size

80KB
MD5

66034ab42eee7e5d2ba7139d668e8f37
SHA1

3a558e0b48e288a5d6980e3baa44b82481c2261c
SHA256

bd7cb674391cf7779570544ce2b38ab9af123d2e5b3d00bc2e531e0527c04bf4
SHA512

84cd7a3a33aa2f19f4b5f0e823906d982268f56bd81441d95ecc990f92c909b0f83dbdd6466a887075d450a8b0b802ca6d04a45ff7403918ac57e164159231d4
SSDEEP

1536:DmL/t9u39UJJHefluwDEuddYeIAhSoFN9RDewHUz4Jb2JZ:DmpI39URWuwDEudduAhJSw0z4Jba

Score

8^/10

evasion

Malware Config

Signatures

Modifies Windows Firewall 1 TTPs 3 IoCs

evasion

Windows Service

T1543.003

pid	Process
2668	netsh.exe
2680	netsh.exe
2796	netsh.exe

Deletes itself 1 IoCs

pid	Process
3052	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
3052	Un_A.exe

Loads dropped DLL 1 IoCs

pid	Process
3032	Un_A.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2756	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3052	Un_A.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3032 wrote to memory of 3052	3032	Un_A.exe	28
PID 3052 wrote to memory of 2668	3052	Un_A.exe	29
PID 3052 wrote to memory of 2668	3052	Un_A.exe	29
PID 3052 wrote to memory of 2668	3052	Un_A.exe	29
PID 3052 wrote to memory of 2668	3052	Un_A.exe	29
PID 3052 wrote to memory of 2680	3052	Un_A.exe	31
PID 3052 wrote to memory of 2680	3052	Un_A.exe	31
PID 3052 wrote to memory of 2680	3052	Un_A.exe	31
PID 3052 wrote to memory of 2680	3052	Un_A.exe	31
PID 3052 wrote to memory of 2796	3052	Un_A.exe	33
PID 3052 wrote to memory of 2796	3052	Un_A.exe	33
PID 3052 wrote to memory of 2796	3052	Un_A.exe	33
PID 3052 wrote to memory of 2796	3052	Un_A.exe	33
PID 3052 wrote to memory of 2756	3052	Un_A.exe	35
PID 3052 wrote to memory of 2756	3052	Un_A.exe	35
PID 3052 wrote to memory of 2756	3052	Un_A.exe	35
PID 3052 wrote to memory of 2756	3052	Un_A.exe	35

C:\Users\Admin\AppData\Local\Temp\Un_A.exe
"C:\Users\Admin\AppData\Local\Temp\Un_A.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall firewall delete rule name="Falcon BMS 4.36"
    3⤵
    - Modifies Windows Firewall
    PID:2668
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall firewall delete rule name="IVC Server 4.36"
    3⤵
    - Modifies Windows Firewall
    PID:2680
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall firewall delete rule name="RTT Server 4.36"
    3⤵
    - Modifies Windows Firewall
    PID:2796
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -ExecutionPolicy Bypass -WindowStyle Hidden -File .\exclude.ps1 -FFFeatureOff
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

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\~nsuA.tmp\exclude.ps1

Filesize
72B

MD5
0f3546149b2fac36cd382bcbf6c37a00

SHA1
9272a55e8822524162264249ec5eae42f846f3b3

SHA256
ce26a2d890ca44e188f7899265f3e9ceaa953389af684416475d6be7e212e06e

SHA512
abcb14c2b9db20c6d3ff48c674e1895d897a74aa8523ebe5a57080fc415f165cc0b4eee234b32b331f505a77ecc1526141ffbb141c4b6ccd6b6ec329efe8d9e5

Download Submit
\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
80KB

MD5
66034ab42eee7e5d2ba7139d668e8f37

SHA1
3a558e0b48e288a5d6980e3baa44b82481c2261c

SHA256
bd7cb674391cf7779570544ce2b38ab9af123d2e5b3d00bc2e531e0527c04bf4

SHA512
84cd7a3a33aa2f19f4b5f0e823906d982268f56bd81441d95ecc990f92c909b0f83dbdd6466a887075d450a8b0b802ca6d04a45ff7403918ac57e164159231d4

Download Submit
memory/2756-14-0x0000000073840000-0x0000000073DEB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-15-0x0000000073840000-0x0000000073DEB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-16-0x00000000026F0000-0x0000000002730000-memory.dmp

Filesize
256KB

Download
memory/2756-17-0x00000000026F0000-0x0000000002730000-memory.dmp

Filesize
256KB

Download
memory/2756-19-0x0000000073840000-0x0000000073DEB000-memory.dmp

Filesize
5.7MB

Download