142fba8baa193ae2dafff3f964c12c28e534e62359343d84a24886606025c72b

Analysis

max time kernel
145s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2024, 17:37

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General

Target

142fba8baa193ae2dafff3f964c12c28e534e62359343d84a24886606025c72bN.dll
Size

134KB
MD5

0e4c8391514ae13b4cd4565b9085e040
SHA1

864a59bee7d717c87816ab7bb9fa0cf887034ccb
SHA256

142fba8baa193ae2dafff3f964c12c28e534e62359343d84a24886606025c72b
SHA512

5c2973d15cb539dfb2a5b216e1a8be52577a4a0745f48ba0293658a229e4e8ea0ba739e179ade6e272695438de365d88d42a20bef10b1eef166ba55244376277
SSDEEP

3072:atTr9Tly9IMBRXNmBocc42Xfjs78523sST+7UZ27hi8f9rpqymYrWvE:q1lEIMBRdmBCBXfjs7YSTXOhFlrpq6is

Score

10^/10

discovery evasion upx

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	rundll32.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\L:	rundll32.exe
File opened (read-only)	\??\I:	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/388-0-0x0000000010000000-0x000000001001A000-memory.dmp	upx
behavioral2/memory/388-11-0x0000000010000000-0x000000001001A000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe

Modifies registry class 32 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 560031000000000002597a6312004170704461746100400009000400efbe02597a630259ce632e00000080e10100000001000000000000000000000000000000329320014100700070004400610074006100000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 50003100000000000259546d100041646d696e003c0009000400efbe02597a634559aa8c2e00000075e1010000000100000000000000000000000000000006242a00410064006d0069006e00000014000000	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 780031000000000002597a631100557365727300640009000400efbe874f77484559aa8c2e000000c70500000000010000000000000000003a000000000082e52e0155007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1144	explorer.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
388	rundll32.exe
388	rundll32.exe
388	rundll32.exe
388	rundll32.exe
388	rundll32.exe
388	rundll32.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	388	rundll32.exe
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2964	Explorer.EXE
2964	Explorer.EXE
2964	Explorer.EXE
2964	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1144	explorer.exe
1144	explorer.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
2964	Explorer.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 388	1148	rundll32.exe	82
PID 1148 wrote to memory of 388	1148	rundll32.exe	82
PID 1148 wrote to memory of 388	1148	rundll32.exe	82
PID 388 wrote to memory of 2964	388	rundll32.exe	49
PID 388 wrote to memory of 1244	388	rundll32.exe	83
PID 388 wrote to memory of 1244	388	rundll32.exe	83
PID 388 wrote to memory of 1244	388	rundll32.exe	83

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
PID:2964
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\142fba8baa193ae2dafff3f964c12c28e534e62359343d84a24886606025c72bN.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\142fba8baa193ae2dafff3f964c12c28e534e62359343d84a24886606025c72bN.dll,#1
    3⤵
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Enumerates connected drives
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:388
  - - C:\Windows\SysWOW64\explorer.exe
      explorer C:\Users\Admin\AppData
      4⤵
      System Location Discovery: System Language Discovery
      PID:1244

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:1144

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

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

memory/388-0-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download
memory/388-4-0x0000000001060000-0x0000000001081000-memory.dmp

Filesize
132KB

Download
memory/388-5-0x0000000001060000-0x0000000001081000-memory.dmp

Filesize
132KB

Download
memory/388-8-0x0000000077B62000-0x0000000077B63000-memory.dmp

Filesize
4KB

Download
memory/388-9-0x000000007F2A0000-0x000000007F2A1000-memory.dmp

Filesize
4KB

Download
memory/388-7-0x0000000001060000-0x0000000001081000-memory.dmp

Filesize
132KB

Download
memory/388-12-0x0000000001060000-0x0000000001081000-memory.dmp

Filesize
132KB

Download
memory/388-11-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download