modiloader | 31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2024, 15:34

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General

Target

31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
Size

90KB
MD5

a96973e28ab2f28267f36ae74185f990
SHA1

2538578e516ba26336a224b9ac2a94e9d3a74d3b
SHA256

31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6
SHA512

345619dbd7aa5dfebc53ba92572c304188a6d217d0f89bb0f1ebe2851c702666e2e27e001cd259665865d13216090ef7b4e80872c17fa6d346e3c4e8f8312d36
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD3:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3h

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/4332-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4332-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4332-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4332-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe

Executes dropped EXE 3 IoCs

pid	Process
4952	csrsll.exe
3000	csrsll.exe
4332	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-1-5-21-3350944739-639801879-157714471-1000\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 4076 set thread context of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4952 set thread context of 3000	4952	csrsll.exe	100
PID 4952 set thread context of 4332	4952	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4076-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4076-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3864-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4076-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c8f-29.dat	upx
behavioral2/memory/3864-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4952-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4952-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4332-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4332-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4332-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4332-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3864-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4952-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4332-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3000-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4332-63-0x0000000000400000-0x0000000000414000-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	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	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe
Token: SeDebugPrivilege	3000	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
4952	csrsll.exe
3000	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 4076 wrote to memory of 3864	4076	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	90
PID 3864 wrote to memory of 3300	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	91
PID 3864 wrote to memory of 3300	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	91
PID 3864 wrote to memory of 3300	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	91
PID 3300 wrote to memory of 1012	3300	cmd.exe	95
PID 3300 wrote to memory of 1012	3300	cmd.exe	95
PID 3300 wrote to memory of 1012	3300	cmd.exe	95
PID 3864 wrote to memory of 4952	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	96
PID 3864 wrote to memory of 4952	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	96
PID 3864 wrote to memory of 4952	3864	31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe	96
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 3000	4952	csrsll.exe	100
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101
PID 4952 wrote to memory of 4332	4952	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
"C:\Users\Admin\AppData\Local\Temp\31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe
  "C:\Users\Admin\AppData\Local\Temp\31764fea7d7bae84d9557a1a689cc6afe0ec81c8820ff2a18a4b91820a8d4ac6N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3864
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OFXPL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3300
  - - 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:1012
- - 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:4952
  - - 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:3000
  - - 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:4332

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\OFXPL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e602c19734c8dc59db4756ec8643474a

SHA1
ffccf7c94694e56ff26c8082fd2b73bb89179fa6

SHA256
6ec5cd3f8824457877b7400a5d44b3658d5f614c1e4f38a4b40b8a885d7a259c

SHA512
7814f61f5f8c66f8f37528ae7f68557acd7471d119d7a295c687e5002b79f6a8ddda0761c352d87a631df720656d336b1b177e13e7de69492f05f2c29dc0aa4d

Download Submit
memory/3000-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4076-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4076-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4076-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4076-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4076-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4076-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4332-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4332-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4332-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4332-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4332-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4332-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4952-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4952-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads