e3b7f72cad8ce1ab44bf2082a3f0b211790f9cc3757e84053fbda09710b7c587

General

Target

d21245ac065eaacb39d32466e6a987e0N.exe
Size

353KB
MD5

d21245ac065eaacb39d32466e6a987e0
SHA1

fcddd5f048cb46ee4a4a5dc2da3e7ba9349f92f3
SHA256

e3b7f72cad8ce1ab44bf2082a3f0b211790f9cc3757e84053fbda09710b7c587
SHA512

454d17a0a6c0b50a89fc354bbea2fc04adf66d35b0057de8ed5869045ae16d11040ea15d513dc1d513d049d138cfea809b54ebc8c6bba442cc896dc6ae7a7269
SSDEEP

3072:KYt8BdoraghZS2/iKM42om06agGR6VYOVjN/xHO07lSaWeyZhc3+:Ktd2nPvq7vfS6VNVjNJHJ7lSaWemc+

Score

10^/10

discovery persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\SysMax\\postgres.exe"	postmaster.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\SysMax\\postgres.exe"	postgres.exe

Executes dropped EXE 2 IoCs

pid	Process
2308	postgres.exe
4504	postmaster.exe

Drops file in System32 directory 13 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\maxiapp.log	d21245ac065eaacb39d32466e6a987e0N.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postmaster.exe	d21245ac065eaacb39d32466e6a987e0N.exe
File created	C:\Windows\SysWOW64\SysMax\postgres.exe	postmaster.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postgres.exe	postgres.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postmaster.exe	postgres.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postgres.exe	d21245ac065eaacb39d32466e6a987e0N.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postgres.exe	postmaster.exe
File created	C:\Windows\SysWOW64\SysMax\postgres.exe	postgres.exe
File created	C:\Windows\SysWOW64\SysMax\postgres.exe	d21245ac065eaacb39d32466e6a987e0N.exe
File created	C:\Windows\SysWOW64\SysMax\postmaster.exe	d21245ac065eaacb39d32466e6a987e0N.exe
File opened for modification	C:\Windows\SysWOW64\SysMax\postmaster.exe	postmaster.exe
File created	C:\Windows\SysWOW64\SysMax\postmaster.exe	postmaster.exe
File created	C:\Windows\SysWOW64\SysMax\postmaster.exe	postgres.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	d21245ac065eaacb39d32466e6a987e0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	postgres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	postmaster.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2248	d21245ac065eaacb39d32466e6a987e0N.exe
2308	postgres.exe
4504	postmaster.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2308	2248	d21245ac065eaacb39d32466e6a987e0N.exe	83
PID 2248 wrote to memory of 2308	2248	d21245ac065eaacb39d32466e6a987e0N.exe	83
PID 2248 wrote to memory of 2308	2248	d21245ac065eaacb39d32466e6a987e0N.exe	83
PID 2308 wrote to memory of 4504	2308	postgres.exe	84
PID 2308 wrote to memory of 4504	2308	postgres.exe	84
PID 2308 wrote to memory of 4504	2308	postgres.exe	84

C:\Users\Admin\AppData\Local\Temp\d21245ac065eaacb39d32466e6a987e0N.exe
"C:\Users\Admin\AppData\Local\Temp\d21245ac065eaacb39d32466e6a987e0N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\SysWOW64\SysMax\postgres.exe
  C:\Windows\system32\SysMax\postgres.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\SysWOW64\SysMax\postmaster.exe
    C:\Windows\system32\SysMax\postmaster.exe
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

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:\Windows\SysWOW64\SysMax\postmaster.exe

Filesize
353KB

MD5
d21245ac065eaacb39d32466e6a987e0

SHA1
fcddd5f048cb46ee4a4a5dc2da3e7ba9349f92f3

SHA256
e3b7f72cad8ce1ab44bf2082a3f0b211790f9cc3757e84053fbda09710b7c587

SHA512
454d17a0a6c0b50a89fc354bbea2fc04adf66d35b0057de8ed5869045ae16d11040ea15d513dc1d513d049d138cfea809b54ebc8c6bba442cc896dc6ae7a7269

Download Submit
C:\Windows\SysWOW64\maxiapp.log

Filesize
12B

MD5
1018e086e4c4160e3bb4b056f5074deb

SHA1
a0069101835763813a5a02857775022ba7fe4a45

SHA256
f94d6d73e2c579e4c007d247731caee8a49e6ac9f19aaf4976263b3c21cf7c25

SHA512
210911f8b57d60d9c8d3d2f7c27b59ba4b8cb177887b69a33b5d5aad8207afde164775dac283d2312c32c50850fcf8e0015a45a098d8f1d3fce466969b7e1c20

Download Submit
memory/2248-0-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2248-21-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2308-22-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4504-23-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads