modiloader | b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443c

Analysis

max time kernel
118s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 17:30

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General

Target

b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
Size

90KB
MD5

d1af45176b1d0f68cb62930d12fe16d0
SHA1

f153f97f312c7416f44f7467637a692411f3c6af
SHA256

b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443c
SHA512

60e2d32c0009ef11536343a252ad3c834d0fa5248a680b14c5ca936b1029a7f5d8c32757e26c82768c273c25dbe46f84ae2dad2aefc2b7e92cc14b1237c13ba1
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDT:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/1496-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-60-0x0000000000400000-0x0000000000414000-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	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe

Executes dropped EXE 3 IoCs

pid	Process
3260	csrsll.exe
1652	csrsll.exe
1496	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 1692 set thread context of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 3260 set thread context of 1652	3260	csrsll.exe	88
PID 3260 set thread context of 1496	3260	csrsll.exe	89

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1692-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1692-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3324-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3324-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3324-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1692-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c9b-28.dat	upx
behavioral2/memory/3324-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3260-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3260-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1496-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1496-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1496-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3260-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1496-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1652-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1496-60-0x0000000000400000-0x0000000000414000-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	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	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe
Token: SeDebugPrivilege	1652	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
3260	csrsll.exe
1652	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 1692 wrote to memory of 3324	1692	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	82
PID 3324 wrote to memory of 3172	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	83
PID 3324 wrote to memory of 3172	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	83
PID 3324 wrote to memory of 3172	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	83
PID 3172 wrote to memory of 1844	3172	cmd.exe	86
PID 3172 wrote to memory of 1844	3172	cmd.exe	86
PID 3172 wrote to memory of 1844	3172	cmd.exe	86
PID 3324 wrote to memory of 3260	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	87
PID 3324 wrote to memory of 3260	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	87
PID 3324 wrote to memory of 3260	3324	b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe	87
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1652	3260	csrsll.exe	88
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89
PID 3260 wrote to memory of 1496	3260	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
"C:\Users\Admin\AppData\Local\Temp\b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe
  "C:\Users\Admin\AppData\Local\Temp\b8a710f52f6fcd7912241ee9297af2d41c8592587505e35cd7d67fc75038443cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LYKSK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3172
  - - 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:1844
- - 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:3260
  - - 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:1652
  - - 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:1496

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a87b8c7a04fb861383c5211fc9f904c8

SHA1
9583e0713b78a4d882ad995b758b3dfe1f43bce7

SHA256
27b2b20faf98c36fda47500d6fa145186c30b84725b63d79b0e75db850b51e15

SHA512
ba64acf10e11001433961f9a6b901f6107d2a28ba1e6312380e0e04dee785a240da82453d7faeb25183e0558a20fa07a1948cc70d2fec217f56da0be78d15520

Download Submit
memory/1496-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1692-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1692-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1692-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1692-6-0x0000000002C70000-0x0000000002C72000-memory.dmp

Filesize
8KB

Download
memory/1692-3-0x00000000023F0000-0x00000000023F2000-memory.dmp

Filesize
8KB

Download
memory/1692-5-0x0000000002C60000-0x0000000002C62000-memory.dmp

Filesize
8KB

Download
memory/3260-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3260-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3260-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3324-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads