55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2024, 10:12

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General

Target

55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe
Size

2.5MB
MD5

e7efb48b374fc3589ec6be9f781716fc
SHA1

6e0d6e82e84385eafc1e7f38b444d4a46de63acc
SHA256

55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc
SHA512

8f42efaaf2d56f29779f804cb1df1c8de62ffc86d31d1379d0d658e94702a7300fe9e8df0d5efcbdedf2bbaf2c98fdd0b3ee348f3a4fbea1458c9ac44d155899
SSDEEP

49152:IwbmXVc6q/k62mtrJuQPC/74pEF7qhS3alXRI3NbD/QQ2HG6SHL/8+3:Iwcudy5/748alO9bLkmI

Score

8^/10

discovery persistence privilege_escalation

Malware Config

Signatures

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Installer.exe

Event Triggered Execution: Component Object Model Hijacking 1 TTPs
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
persistence privilege_escalation

Component Object Model Hijacking
T1546.015

Executes dropped EXE 3 IoCs

pid	Process
3688	nchsetup.exe
1140	Installer.exe
868	nchsetup.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\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ExpressAccountsInstall = "C:\\Users\\Admin\\AppData\\Local\\Temp\\55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe"	nchsetup.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NCH Software\ExpressAccounts\shellmenua.msix	nchsetup.exe
File created	C:\Program Files (x86)\NCH Software\ExpressAccounts\shellmenub.msix	nchsetup.exe
File created	C:\Program Files (x86)\NCH Software\ExpressAccounts\expressaccountssetup_v11.11.exe	nchsetup.exe
File created	C:\Program Files (x86)\NCH Software\ExpressAccounts\expressaccounts.exe	nchsetup.exe
File opened for modification	C:\Program Files (x86)\NCH Software\ExpressAccounts\expressaccounts.exe	nchsetup.exe
File created	C:\Program Files (x86)\NCH Software\ExpressAccounts\shellmenu.dll	nchsetup.exe

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

System Information Discovery
T1082

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nchsetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nchsetup.exe

Modifies registry class 64 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aif\Shell	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.wp\Shell\NCHconvertdoc\command\ = "\"C:\\Program Files (x86)\\NCH Software\\ExpressAccounts\\expressaccounts.exe\" -extfind Doxillion \"%L\""	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.ogg\Shell\NCHeditsound\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.asf\Shell\NCHconvertvideo	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.gz\Shell\NCHextract\ = "Extraire avec Express Zip"	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\.tar.gz	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\7-Zip\.tgz\DefaultIcon	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.pcx	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aif\Shell\NCHeditsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.3gp\Shell\NCHconvertvideo	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.webp\Shell	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.dng\Shell\NCHslideshow\command	nchsetup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\wpfile\DefaultIcon\ = "%SystemRoot%\\SysWow64\\shell32.dll,19"	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.caf\Shell\NCHeditsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\ExpressAccounts\\expressaccounts.exe\" -extfind WavePad \"%L\""	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.wma\Shell\NCHconvertsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.mpeg\Shell\NCHconvertvideo\command	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\webpfile\DefaultIcon	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.cab\Shell\NCHextract	nchsetup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\ddpfile\shell\open\command\ = "\"C:\\Program Files (x86)\\NCH Software\\ExpressAccounts\\expressaccounts.exe\" -extfind DreamPlan \"%L\""	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.mov\Shell\NCHeditvideo\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.bmp	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.doc\Shell\NCHconvertdoc	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.iso\Shell\NCHextract	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.rar\Shell\NCHextract\ = "Extraire avec Express Zip"	nchsetup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\.spj\ = "spjfile"	nchsetup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\spjfile\DefaultIcon\ = "%SystemRoot%\\SysWow64\\shell32.dll,19"	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aiff\Shell\NCHeditsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.gsm\Shell\NCHconvertsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.flac\Shell\NCHeditsound\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.ds2\Shell\NCHconvertsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.divx	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.bmp\Shell\NCHconvertimage\command	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.pdf\Shell\NCHconvertdoc\command\ = "\"C:\\Program Files (x86)\\NCH Software\\ExpressAccounts\\expressaccounts.exe\" -extfind Doxillion \"%L\""	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\wpfile\DefaultIcon	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.wps\Shell\NCHconvertdoc	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.caf\Shell\NCHconvertsound\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.ogv\Shell\NCHeditvideo\command	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aiff\Shell\NCHeditsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\ExpressAccounts\\expressaccounts.exe\" -extfind WavePad \"%L\""	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.caf\Shell\NCHconvertsound\ = "Convertir le fichier audio avec Switch"	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.3gp\Shell\NCHconvertvideo\ = "Convertir le fichier vidéo avec Prism"	nchsetup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\.dct\ = "dctfile"	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\vpjfile\shell\open	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aiff\Shell	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.m4v\Shell	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.exr\Shell	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.heif\Shell\NCHeditphoto	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.webp\Shell\NCHeditphoto\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.voc	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\voxfile	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.avi\Shell	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.doc\Shell\NCHconvertdoc\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aif\Shell\NCHconvertsound	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.vob	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.asf\Shell\NCHconvertvideo\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.tga\Shell\NCHconvertimage	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.rar\Shell\NCHextract\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.mp3\Shell\NCHeditsound\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.dv\Shell\NCHeditvideo	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.mpeg\Shell\NCHeditvideo\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.ogv\Shell\NCHconvertvideo\command	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.asf\Shell\NCHeditvideo\command	nchsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.jp2\Shell\NCHslideshow\ = "Créer un diaporama avec PhotoStage"	nchsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.pdf\Shell\NCHconvertdoc\command	nchsetup.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\spjfile\shell\open	nchsetup.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3688	nchsetup.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 3688	1940	55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe	83
PID 1940 wrote to memory of 3688	1940	55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe	83
PID 1940 wrote to memory of 3688	1940	55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe	83
PID 3688 wrote to memory of 1140	3688	nchsetup.exe	102
PID 3688 wrote to memory of 1140	3688	nchsetup.exe	102
PID 3688 wrote to memory of 1140	3688	nchsetup.exe	102
PID 1140 wrote to memory of 868	1140	Installer.exe	103
PID 1140 wrote to memory of 868	1140	Installer.exe	103
PID 1140 wrote to memory of 868	1140	Installer.exe	103

C:\Users\Admin\AppData\Local\Temp\55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe
"C:\Users\Admin\AppData\Local\Temp\55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\n1s\nchsetup.exe
  "C:\Users\Admin\AppData\Local\Temp\n1s\nchsetup.exe" -installer "C:\Users\Admin\AppData\Local\Temp\55646dcc5ff3dff6640506d09fd9ffd270973fd920e29e968531a4b2df1575fc.exe" -instdata "C:\Users\Admin\AppData\Local\Temp\n1s\nchdata.dat"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3688
- - C:\Users\Admin\AppData\Local\Temp\ExpressAccounts-3532-1\Installer.exe
    C:\Users\Admin\AppData\Local\Temp\ExpressAccounts-3532-1\Installer.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1140
  - - C:\Users\Admin\AppData\Local\Temp\n2s\nchsetup.exe
      "C:\Users\Admin\AppData\Local\Temp\n2s\nchsetup.exe" -installer "C:\Users\Admin\AppData\Local\Temp\ExpressAccounts-3532-1\Installer.exe" -instdata "C:\Users\Admin\AppData\Local\Temp\n2s\nchdata.dat"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:868

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

Event Triggered Execution

T1546

Component Object Model Hijacking

T1546.015

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Component Object Model Hijacking

T1546.015

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ExpressAccounts-3532-1\Installer.exe

Filesize
2.5MB

MD5
38400b9ef545c6e5c7e5d6f45c351b9c

SHA1
0da3d9bd8b4beba738ea284389ae91579a823726

SHA256
86dc6642ebeb2ba69618a82dabf403188d3c48603749bf75500249bfdf88571b

SHA512
40feb328fbf028b7a0b7dbca57640324ff15a45a27035a277789fcb0f598804c99d79fb3e9990966a4b1ece73b23e6310fd28e5b19a75c27ee7b31f536b27b6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\n1s\nchdata.dat

Filesize
1.6MB

MD5
56fd278e590cfb770a6fafcbabfa0cf5

SHA1
21105e95998c1c3dea3d40cc9619097ce3a26547

SHA256
cef7a42356f5fe2c1998e8fef00c6a86ffe1f82fbe98bdab70c400e3a7a15a4b

SHA512
678a42fde4daa8ad7e750a18150bab006d0bfe7d451fd2916bd9476967e0964168355440f594cca9ecf84ea1eb93a2c4884c9cba3e22ccf7960e3d718e4464ff

Download Submit
C:\Users\Admin\AppData\Local\Temp\n1s\nchsetup.exe

Filesize
3.7MB

MD5
da3244888f5ada3767ac437d1f82beec

SHA1
698ba853e522bbf6bc4370d4e619ac3f311e26ba

SHA256
2ece7501b636a1876a0c98a1901691d0159ef5db4734a65d8a5498907a572cdf

SHA512
9621201b8b6263e9a0d12c10c0c3d08a19f2aa78f0d96906260460ee40ceacf5fd6a196dc46e608301866af5dc48443c5a0f21ff8311db942e51ccc75593d124

Download Submit
C:\Users\Admin\AppData\Local\Temp\n2s\nchsetup.exe

Filesize
3.6MB

MD5
d462aca4e6bc86ae2ebc0c3de913ff47

SHA1
9815368a0cf0ff9976340c863554ea1b4c6c340a

SHA256
b50d7d597ec31063b8b555130b76dd8c35d9e0ecbbfd3cca5864b8da72792d8e

SHA512
1eba86ff6ec6467b6eaef3b66ccc8ae06e1473b26c7a2340c360126723dbcccf03e977df0cc214967f7ed0663257119c87dae946089b53c05d6f85d40e7ae17b

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads