471f3fb1a953fab38be3081eb835574694bc72b94f239edc400d1ce3d7a8ecb0

Analysis

max time kernel
300s
max time network
300s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:03

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General

Target

91d24e06572099ba0aa5c20be6b1021fa48e864913fe3676ed05323e6b68fceb.zip
Size

282KB
MD5

f79b517d733de07ee82e5ac8cd9ee192
SHA1

050b21190591004cbee3a06019dcb34e766afe47
SHA256

91d24e06572099ba0aa5c20be6b1021fa48e864913fe3676ed05323e6b68fceb
SHA512

799e55b3a1e04c7c87c7fe6fcb807600975510a7f05fa57f83a9301731a378c1323486343ba880a575aef59faa6e1d1ccc9cea90173b7626228b24ff9d4e685c
SSDEEP

6144:QY4mV5gq4DBKkxa2RNJYw8coEdNqAniTw1sbLp7ByJ7NFPjsnH5+qPZOMbM+juE:OmVmb9Kkxa21Yw8QiJdAJTqNbM+/

Score

9^/10

collection defense_evasion discovery evasion execution impact persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Executes dropped EXE 2 IoCs

Processes:

Saldo.Pdf______________________________________________________________.exeSaldo.Pdf______________________________________________________________.exe

pid	process
2028	Saldo.Pdf______________________________________________________________.exe
2632	Saldo.Pdf______________________________________________________________.exe

Loads dropped DLL 1 IoCs

Processes:

Saldo.Pdf______________________________________________________________.exe

pid process

2028 Saldo.Pdf______________________________________________________________.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	explorer.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\idugjbib = "C:\\Windows\\ukkperyh.exe"	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Saldo.Pdf______________________________________________________________.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Saldo.Pdf______________________________________________________________.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Saldo.Pdf______________________________________________________________.exeSaldo.Pdf______________________________________________________________.exe

description	pid	process	target process
PID 2028 set thread context of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2632 set thread context of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\ukkperyh.exe explorer.exe
File created C:\Windows\ukkperyh.exe explorer.exe

description	ioc	process
File opened for modification	C:\Windows\ukkperyh.exe	explorer.exe
File created	C:\Windows\ukkperyh.exe	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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

Processes:

Saldo.Pdf______________________________________________________________.exeSaldo.Pdf______________________________________________________________.exeexplorer.exevssadmin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Saldo.Pdf______________________________________________________________.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Saldo.Pdf______________________________________________________________.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe

Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Direct Volume Access
T1006

Processes:

vssadmin.exe

pid process

1144 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

7zFM.exe

pid process

2724 7zFM.exe
2724 7zFM.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

7zFM.exe

pid process

2724 7zFM.exe

pid	process
1144	vssadmin.exe

pid	process
2724	7zFM.exe
2724	7zFM.exe

pid	process
2724	7zFM.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

7zFM.exevssvc.exe

description	pid	process
Token: SeRestorePrivilege	2724	7zFM.exe
Token: 35	2724	7zFM.exe
Token: SeSecurityPrivilege	2724	7zFM.exe
Token: SeBackupPrivilege	872	vssvc.exe
Token: SeRestorePrivilege	872	vssvc.exe
Token: SeAuditPrivilege	872	vssvc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

7zFM.exe

pid process

2724 7zFM.exe
2724 7zFM.exe

pid	process
2724	7zFM.exe
2724	7zFM.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

7zFM.exeSaldo.Pdf______________________________________________________________.exeSaldo.Pdf______________________________________________________________.exeexplorer.exe

description	pid	process	target process
PID 2724 wrote to memory of 2028	2724	7zFM.exe	Saldo.Pdf______________________________________________________________.exe
PID 2724 wrote to memory of 2028	2724	7zFM.exe	Saldo.Pdf______________________________________________________________.exe
PID 2724 wrote to memory of 2028	2724	7zFM.exe	Saldo.Pdf______________________________________________________________.exe
PID 2724 wrote to memory of 2028	2724	7zFM.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2028 wrote to memory of 2632	2028	Saldo.Pdf______________________________________________________________.exe	Saldo.Pdf______________________________________________________________.exe
PID 2632 wrote to memory of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe
PID 2632 wrote to memory of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe
PID 2632 wrote to memory of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe
PID 2632 wrote to memory of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe
PID 2632 wrote to memory of 1940	2632	Saldo.Pdf______________________________________________________________.exe	explorer.exe
PID 1940 wrote to memory of 1144	1940	explorer.exe	vssadmin.exe
PID 1940 wrote to memory of 1144	1940	explorer.exe	vssadmin.exe
PID 1940 wrote to memory of 1144	1940	explorer.exe	vssadmin.exe
PID 1940 wrote to memory of 1144	1940	explorer.exe	vssadmin.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

outlook_win_path 1 IoCs

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	explorer.exe

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\91d24e06572099ba0aa5c20be6b1021fa48e864913fe3676ed05323e6b68fceb.zip"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Local\Temp\7zO4AA04038\Saldo.Pdf______________________________________________________________.exe
  "C:\Users\Admin\AppData\Local\Temp\7zO4AA04038\Saldo.Pdf______________________________________________________________.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Users\Admin\AppData\Local\Temp\7zO4AA04038\Saldo.Pdf______________________________________________________________.exe
    "C:\Users\Admin\AppData\Local\Temp\7zO4AA04038\Saldo.Pdf______________________________________________________________.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2632
  - - C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\system32\explorer.exe"
      4⤵
      Accesses Microsoft Outlook accounts
      Accesses Microsoft Outlook profiles
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      outlook_win_path
      PID:1940
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin.exe Delete Shadows /All /Quiet
        5⤵
        System Location Discovery: System Language Discovery
        Interacts with shadow copies
        
        PID:1144

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zO4AA04038\Saldo.Pdf______________________________________________________________.exe

Filesize
443KB

MD5
e982953f4b15ad41dbccb13a09970214

SHA1
152b6ec0bda40347968c560f370e8f2089cb0436

SHA256
4c953b87b35c7764a32cbcde63ea1fb2f1563883f28ef209718604c48ba497e3

SHA512
60d9dc59ad324523ecc5f6933aada9a13cb5e9c67ba0b0e60007d784e17194da2e7308050ce1084c377a965a58bd846fd065c4589c5bc169666915fb557e6124

Download Submit
memory/1940-31-0x0000000000080000-0x00000000000BD000-memory.dmp

Filesize
244KB

Download
memory/1940-44-0x0000000000080000-0x00000000000BD000-memory.dmp

Filesize
244KB

Download
memory/1940-43-0x0000000000080000-0x00000000000BD000-memory.dmp

Filesize
244KB

Download
memory/1940-40-0x0000000000080000-0x00000000000BD000-memory.dmp

Filesize
244KB

Download
memory/1940-32-0x0000000000080000-0x00000000000BD000-memory.dmp

Filesize
244KB

Download
memory/2632-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-26-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-24-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-20-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-29-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-35-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-16-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2632-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download