modiloader | 566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 14:37

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General

Target

566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
Size

90KB
MD5

c31a1be0f98dd3068aac791043a3c157
SHA1

4e7330d7df2d87b2395f512a7f49dcc26a4ef656
SHA256

566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699
SHA512

40e1b2bceb4d4f5527db969ea1bdebb22611bcb60432d6d3baaec93d7a1842a14d560b5e83c0d35a57b730a0004728a1639a50cf2c61b0ae83819c54abbd4149
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDE:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3G

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1100-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1100-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1100-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1100-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe

Executes dropped EXE 3 IoCs

pid	Process
2120	csrsll.exe
1316	csrsll.exe
1100	csrsll.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3680 set thread context of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 2120 set thread context of 1316	2120	csrsll.exe	95
PID 2120 set thread context of 1100	2120	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3680-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3680-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2016-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2016-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2016-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3680-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b76-29.dat	upx
behavioral2/memory/2016-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2120-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2120-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1100-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1100-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1100-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1100-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1100-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2016-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2120-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1316-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1100-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe
Token: SeDebugPrivilege	1316	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
2120	csrsll.exe
1316	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 3680 wrote to memory of 2016	3680	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	86
PID 2016 wrote to memory of 3504	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	87
PID 2016 wrote to memory of 3504	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	87
PID 2016 wrote to memory of 3504	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	87
PID 3504 wrote to memory of 3144	3504	cmd.exe	90
PID 3504 wrote to memory of 3144	3504	cmd.exe	90
PID 3504 wrote to memory of 3144	3504	cmd.exe	90
PID 2016 wrote to memory of 2120	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	92
PID 2016 wrote to memory of 2120	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	92
PID 2016 wrote to memory of 2120	2016	566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe	92
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1316	2120	csrsll.exe	95
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96
PID 2120 wrote to memory of 1100	2120	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
"C:\Users\Admin\AppData\Local\Temp\566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Users\Admin\AppData\Local\Temp\566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe
  "C:\Users\Admin\AppData\Local\Temp\566855da71c4512e49ace1e033d3dd890cf822fd4d2936ff869bb63581cc5699.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BRNYO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3504
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3144
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2120
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1316
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1100

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

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

C:\Users\Admin\AppData\Local\Temp\BRNYO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
f5a776dd67c61a5d933c582fef571e77

SHA1
31b533dd31151e898986bb62dfe44808f9d11080

SHA256
4462fcb31d73b0bd5361e49c1f998ea6ad7774817dfa48986c547cfc392473c8

SHA512
23f63e3c14ec5759c5901b46b74f2c96c5208b02c122d03b16c7abae25257f4a3c8dca489bb2d4a06b466c048306a1684418a599f35f0fd812828489216c9fd1

Download Submit
memory/1100-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1100-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1100-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1100-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1100-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1100-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1316-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2016-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2016-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2016-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2016-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2016-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2016-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2120-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2120-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2120-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3680-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3680-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/3680-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3680-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3680-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3680-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads