b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925

General

Target

b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe
Size

313KB
MD5

f197bcc5fc01ef01f914f5c0d26661a0
SHA1

417447bbf87f276a87226d533d19b29d375a6136
SHA256

b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925
SHA512

ad1fef955ad82bdf58deeb00a2bcbe2ddc6819a63dca8fe8856e7c08a6a97f91263295d07f6b737e8edfd10be8fd90958b67d5d2762addd6e2a6ec1e42187f7e
SSDEEP

6144:ESxGJW6MBp10Ss6G+YTfp73gZC0g1FlOiPAY8qXZixabaSuJDV:a8TBp1jPG+mfp73FTlOvY82Z1aD1V

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
672	server1.exe

Loads dropped DLL 2 IoCs

pid	Process
2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe
2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
672	server1.exe
672	server1.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 672	2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe	29
PID 2380 wrote to memory of 672	2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe	29
PID 2380 wrote to memory of 672	2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe	29
PID 2380 wrote to memory of 672	2380	b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe	29
PID 672 wrote to memory of 1236	672	server1.exe	20
PID 672 wrote to memory of 1236	672	server1.exe	20
PID 672 wrote to memory of 1236	672	server1.exe	20
PID 672 wrote to memory of 1236	672	server1.exe	20
PID 672 wrote to memory of 1236	672	server1.exe	20
PID 672 wrote to memory of 1236	672	server1.exe	20

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1236
- C:\Users\Admin\AppData\Local\Temp\b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe
  "C:\Users\Admin\AppData\Local\Temp\b73efa6b5d5d4b1849848dcc1488e77e74a92a40d4746d9bc9e2777ff0afd925N.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server1.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server1.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server1.exe

Filesize
156KB

MD5
a1435734641178734d320cf019b6cd94

SHA1
1dec60fe68cca4628cd8c7efe6fdabb018a863e5

SHA256
b084b345f1ba0ec2beccfd7c74d711c88997d76b0a4f084172d2c496f5b2e15a

SHA512
88debe3c7c99365477c0e215b55f3dbd89cc6f8fb023b9594ac3ebb2ad89524a31acc733dbde08b8ad8f1a5b9013e9359ef772f9b61990852de948427c71f36f

Download Submit
memory/672-20-0x0000000010000000-0x0000000010011000-memory.dmp

Filesize
68KB

Download
memory/672-15-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/672-17-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/672-19-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/672-18-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1236-21-0x000000007FFF0000-0x000000007FFF1000-memory.dmp

Filesize
4KB

Download
memory/1236-27-0x000000007EFC0000-0x000000007EFC6000-memory.dmp

Filesize
24KB

Download
memory/2380-2-0x0000000001000000-0x000000000104E000-memory.dmp

Filesize
312KB

Download
memory/2380-1-0x0000000001000000-0x000000000104E000-memory.dmp

Filesize
312KB

Download
memory/2380-0-0x0000000001001000-0x0000000001003000-memory.dmp

Filesize
8KB

Download
memory/2380-5-0x0000000001000000-0x000000000104E000-memory.dmp

Filesize
312KB

Download
memory/2380-6-0x0000000001000000-0x000000000104E000-memory.dmp

Filesize
312KB

Download
memory/2380-40-0x0000000001000000-0x000000000104E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads