471f3fb1a953fab38be3081eb835574694bc72b94f239edc400d1ce3d7a8ecb0

Analysis

max time kernel
300s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:03

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General

Target

845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe
Size

246KB
MD5

7f61ab7160ccea4f69fed025fbbfdb30
SHA1

88d06d4124bca680bf28dde09cc1c3995002eef3
SHA256

845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8
SHA512

8ff46db7d1bfddef6bab676c1439207a7b755280720bf83406d95a700eac364ef667978a7e538cc3d6e2836487b38ddc34df288100b510e32d16f013ffd07d98
SSDEEP

6144:clmE5hV/XRG4FmeAs32AcNhunE+AWTWk6+wv:2/XRG4FdAs32AeOWk

Score

9^/10

discovery persistence ransomware

Malware Config

Signatures

Renames multiple (140) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Deletes itself 1 IoCs

Processes:

mshta.exe

pid process

2936 mshta.exe
Executes dropped EXE 1 IoCs

Processes:

trust.exe

pid process

2884 trust.exe

pid	process
2936	mshta.exe

pid	process
2884	trust.exe

Loads dropped DLL 5 IoCs

Processes:

845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exeWerFault.exe

pid	process
2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe
2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe
1632	WerFault.exe
1632	WerFault.exe
1632	WerFault.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

mshta.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\SG = "C:\\Users\\Admin\\AppData\\Roaming\\trust.exe"	mshta.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1632 2884 WerFault.exe trust.exe

pid	pid_target	process	target process
1632	2884	WerFault.exe	trust.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:

845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exemshta.exetrust.exemshta.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	trust.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

mshta.exemshta.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exetrust.exe

description	pid	process	target process
PID 2708 wrote to memory of 2884	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	trust.exe
PID 2708 wrote to memory of 2884	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	trust.exe
PID 2708 wrote to memory of 2884	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	trust.exe
PID 2708 wrote to memory of 2884	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	trust.exe
PID 2708 wrote to memory of 2936	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	mshta.exe
PID 2708 wrote to memory of 2936	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	mshta.exe
PID 2708 wrote to memory of 2936	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	mshta.exe
PID 2708 wrote to memory of 2936	2708	845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe	mshta.exe
PID 2884 wrote to memory of 2608	2884	trust.exe	mshta.exe
PID 2884 wrote to memory of 2608	2884	trust.exe	mshta.exe
PID 2884 wrote to memory of 2608	2884	trust.exe	mshta.exe
PID 2884 wrote to memory of 2608	2884	trust.exe	mshta.exe
PID 2884 wrote to memory of 1632	2884	trust.exe	WerFault.exe
PID 2884 wrote to memory of 1632	2884	trust.exe	WerFault.exe
PID 2884 wrote to memory of 1632	2884	trust.exe	WerFault.exe
PID 2884 wrote to memory of 1632	2884	trust.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe
"C:\Users\Admin\AppData\Local\Temp\845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Roaming\trust.exe
  "C:\Users\Admin\AppData\Roaming\trust.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Windows\SysWOW64\mshta.exe
    mshta.exe "javascript:o=new ActiveXObject('WScript.Shell');setInterval(function(){try{o.RegWrite('HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SG','C:\\Users\\Admin\\AppData\\Roaming\\trust.exe');}catch(e){}},10);"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Modifies Internet Explorer settings
    PID:2608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 404
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:1632
- C:\Windows\SysWOW64\mshta.exe
  mshta.exe "javascript:o=new ActiveXObject('Scripting.FileSystemObject');setInterval(function(){try{o.DeleteFile('C:\\Users\\Admin\\AppData\\Local\\Temp\\845263~1.EXE');close()}catch(e){}},10);"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\trust.exe

Filesize
246KB

MD5
7f61ab7160ccea4f69fed025fbbfdb30

SHA1
88d06d4124bca680bf28dde09cc1c3995002eef3

SHA256
845263c86931440e934cf40f4461dc14903a474f6f5eab4773482842855ba1c8

SHA512
8ff46db7d1bfddef6bab676c1439207a7b755280720bf83406d95a700eac364ef667978a7e538cc3d6e2836487b38ddc34df288100b510e32d16f013ffd07d98

Download Submit
C:\Users\Admin\Documents\StartUnpublish.xlsx.zendrz

Filesize
16KB

MD5
2eb293f0c8e6ec49645888c545e407db

SHA1
9e4bcc687c2b42a1132faee5f09c797be484c132

SHA256
dc4b4d235fe0e01ca79ddde37d0cdc31f236fe8f2f5cd39ce08af0bc7f830970

SHA512
f1534b061cb799b406133861d0dd2cf3e8ce43e993d881d921aca600a16bb80b7e5a65940288e30430cb4f09e9b7c7fb868f49b667efe497885b0832c1526fc0

Download Submit
C:\Users\Admin\Favorites\Links for United States\Read Me Please.hta

Filesize
3KB

MD5
127956fd323de3ce35fe88762dba184a

SHA1
2997b76546b19afe99cf753363237849061b0903

SHA256
2ff7ac1008fb6e1cf164a8af01afb00aae81027a0ce840bffe94af56651ef1b2

SHA512
9e9deecb9901e3be7894b9703b040fe0b7859158cc17786806912a36b40aef9fb33d18f7ff2d08e2159b6f09e264494f3e24d71539c78a076ee34ad97081d4f0

Download Submit
C:\vcredist2010_x86.log.html.zendrz

Filesize
82KB

MD5
1e11582195969f779fee2a749170f8b2

SHA1
8f8008276262d38ed93b6e26ebd90c17d5b2f5d4

SHA256
1b7e0704394bb270b5d24ee8f9a511ac75801908edf04d8caf9172adb25eeaf3

SHA512
4f6cfef56521cc36c22e6e58c2e8d1097e220c9bc35f22c41341488d1e74ea3a3f2cd7d715fba8a64cdd8a9aa7b18a8fffb3f699c43d065f01dc3c1a40bdfb45

Download Submit
memory/2708-9-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2884-452-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2884-453-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download