7e7c00740baa58af22ef6f825d86344732464a4e325b5eb6f93f33898de079fa

Analysis

max time kernel
1198s
max time network
1196s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/11/2024, 02:36

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General

Target
7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe
Size 657KB
Sample241122-c3zrraspfs
SHA256 7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b
MD5 50400e6fa866b326f6a67300848ad529
SHA1 663c7c0c21c9e9338bcdfec0676a24fca4d72e6c
SHA512 da41821a918bcd9317fe7e7ab30aa3fc5828b5fc738d82d8fe4a27ea3326b62974acc5df6e8d8b9283db2e49368548d92871c7658388f4a821f45390e70a50c4
SSDEEP 6144:5YaC47y+HbjC3HjeSVa/wLTAvtQ5GjqgnCOFd0dcXloLaAj9PgM1ZxKbrOXJaFS:3C3HjbVbLkFQ2qe0fLVj9IIrK2Za
MD5 SHA1 SHA512 SSDEEP

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	explorer.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\erujojez = "\"C:\\Windows\\uxosfzyj.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ipecho.net

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\uxosfzyj.exe	explorer.exe
File created	C:\Windows\uxosfzyj.exe	explorer.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	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.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

pid	Process
2840	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2692	vssvc.exe
Token: SeRestorePrivilege	2692	vssvc.exe
Token: SeAuditPrivilege	2692	vssvc.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31
PID 2480 wrote to memory of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31
PID 2480 wrote to memory of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31
PID 2480 wrote to memory of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31
PID 2480 wrote to memory of 2344	2480	7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe	31
PID 2344 wrote to memory of 2840	2344	explorer.exe	32
PID 2344 wrote to memory of 2840	2344	explorer.exe	32
PID 2344 wrote to memory of 2840	2344	explorer.exe	32
PID 2344 wrote to memory of 2840	2344	explorer.exe	32

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

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	explorer.exe

C:\Users\Admin\AppData\Local\Temp\7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe
"C:\Users\Admin\AppData\Local\Temp\7175d6bb11dea0932bd4b611d0f7221b62a71dbc54607e97ad397f104bcffa2b.exe"
1⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\system32\explorer.exe"
  2⤵
  - 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
  - Modifies Internet Explorer Phishing Filter
  - Suspicious use of WriteProcessMemory
  - outlook_win_path
  PID:2344
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2840

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2692

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

ybutorip

Path C:\ProgramData\yvygyjotobynunuj\ybutorip
Size 657KB
SHA256 30fe71658d77a5974a3f901f3500800c30e0bdcd45afa1f56edaebcb45dd92cd
MD5 95aceb733acee5dbebb614ddff85a59c
SHA1 f74441852f300a4e3d2dfefe31308a87cfc15eb5
SHA512 825b59d4d4505428bfbe8cafe563d3880a4f4036a09cd7fbd3423bcc373e5b9248dc6b717f761287fc767048ecaa7d79cfda2c249def29da825c78ad9ad2eec2
SSDEEP 12288:NH4R0qdAVDtXJfVmXuaYuJO9co3IWWPi9VqKwdaIxrPYC62y:NYR03rXJfVyyr9co3IWWPiFgaQTzc
MD5 SHA1 SHA512 SSDEEP

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memory/2344-4-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-5-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-7-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-13-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-19-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-18-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2344-23-0x0000000000080000-0x00000000000F1000-memory.dmp

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memory/2480-0-0x0000000000400000-0x00000000004A7000-memory.dmp

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memory/2480-2-0x0000000000270000-0x00000000002C8000-memory.dmp

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memory/2480-8-0x0000000000400000-0x00000000004A7000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads