ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565

General

Target

ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe
Size

281KB
MD5

379cbaf3f9c2cb1fa8c722fc5d05713f
SHA1

45b7c970e0f5218dab690ef2844dc06713af573a
SHA256

ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565
SHA512

c60a98209b32803d4cb95694441f25cc3c36f031f5ee7a358ce381953c69fd95d378d8ccb6c4ef89bd0c2eb775328b17619919e616ef8f0be7a4e08a6cf3c610
SSDEEP

6144:Tr5JM1TxY5DDneK73ELADcxVmO88fSbUbI9hiu:TeTyDnewCADwI8f2UE9

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1700	Server.exe
4124	explorer.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3500	netsh.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08f4dc96bbb7af09d1a37fe35c75a42f.exe	explorer.exe
File opened for modification	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-1-5-21-2295526160-1155304984-640977766-1000\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

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	Server.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	Server.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	Server.exe
File created	C:\Windows\assembly\Desktop.ini	Server.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	Server.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 23 IoCs

pid	Process
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe
4124	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	Server.exe
Token: SeDebugPrivilege	4124	explorer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5044 wrote to memory of 1700	5044	ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe	80
PID 5044 wrote to memory of 1700	5044	ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe	80
PID 5044 wrote to memory of 1700	5044	ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe	80
PID 1700 wrote to memory of 4124	1700	Server.exe	81
PID 1700 wrote to memory of 4124	1700	Server.exe	81
PID 1700 wrote to memory of 4124	1700	Server.exe	81
PID 4124 wrote to memory of 3500	4124	explorer.exe	82
PID 4124 wrote to memory of 3500	4124	explorer.exe	82
PID 4124 wrote to memory of 3500	4124	explorer.exe	82

C:\Users\Admin\AppData\Local\Temp\ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe
"C:\Users\Admin\AppData\Local\Temp\ae95cbcd84f05a668d517b15ad010d25a0452bfc3c860a90d2a76d8e452c9565.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1700
- - C:\Users\Admin\AppData\Local\Temp\explorer.exe
    "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Drops startup file
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4124
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\explorer.exe" "explorer.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:3500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
232KB

MD5
6adb8010a43fb2bae648dff6633a9d78

SHA1
171e83edb252e600946ab38c78a009e43d2468bb

SHA256
43bd2a56c307f0889e3ae2ac2b05a975534e48c8831693e68340c41f739494ac

SHA512
47a9719e4da2b745aab757bd0c453c26b96629bdbd3270af775dc961b775e4c63e54bbe9566d85b49e1cb6f0615af5659f576ba38f9490c0876a9d5e1f58b1a8

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

Filesize
232KB

MD5
6adb8010a43fb2bae648dff6633a9d78

SHA1
171e83edb252e600946ab38c78a009e43d2468bb

SHA256
43bd2a56c307f0889e3ae2ac2b05a975534e48c8831693e68340c41f739494ac

SHA512
47a9719e4da2b745aab757bd0c453c26b96629bdbd3270af775dc961b775e4c63e54bbe9566d85b49e1cb6f0615af5659f576ba38f9490c0876a9d5e1f58b1a8

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

Filesize
232KB

MD5
6adb8010a43fb2bae648dff6633a9d78

SHA1
171e83edb252e600946ab38c78a009e43d2468bb

SHA256
43bd2a56c307f0889e3ae2ac2b05a975534e48c8831693e68340c41f739494ac

SHA512
47a9719e4da2b745aab757bd0c453c26b96629bdbd3270af775dc961b775e4c63e54bbe9566d85b49e1cb6f0615af5659f576ba38f9490c0876a9d5e1f58b1a8

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

Filesize
232KB

MD5
6adb8010a43fb2bae648dff6633a9d78

SHA1
171e83edb252e600946ab38c78a009e43d2468bb

SHA256
43bd2a56c307f0889e3ae2ac2b05a975534e48c8831693e68340c41f739494ac

SHA512
47a9719e4da2b745aab757bd0c453c26b96629bdbd3270af775dc961b775e4c63e54bbe9566d85b49e1cb6f0615af5659f576ba38f9490c0876a9d5e1f58b1a8

Download Submit
memory/1700-132-0x0000000000000000-mapping.dmp

Download
memory/1700-135-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1700-139-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1700-141-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3500-142-0x0000000000000000-mapping.dmp

Download
memory/4124-136-0x0000000000000000-mapping.dmp

Download
memory/4124-140-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/4124-143-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

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