modiloader | a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dc

Analysis

max time kernel
119s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/12/2024, 07:11

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General

Target

a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
Size

90KB
MD5

c6b0348c1935657be790e34493c09950
SHA1

95a9138a8dd1885cb720810bd0f63000d0c4599e
SHA256

a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dc
SHA512

77a41bfc4ea71e7293cfd294d048bf8bdbb107c2e520d3f5b447cf05b5c9841e3bded720c823958624683f55a1ed1be4132027e39ef0f4b1888c0e498bccfb55
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDz: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/1836-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1836-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1836-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1836-64-0x0000000000400000-0x0000000000414000-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	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe

Executes dropped EXE 3 IoCs

pid	Process
3352	csrsll.exe
420	csrsll.exe
1836	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 1296 set thread context of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 3352 set thread context of 420	3352	csrsll.exe	91
PID 3352 set thread context of 1836	3352	csrsll.exe	92

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1296-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1296-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3756-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3756-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3756-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1296-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b57-31.dat	upx
behavioral2/memory/3756-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3352-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3352-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1836-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1836-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1836-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1836-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3352-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1836-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3756-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/420-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1836-64-0x0000000000400000-0x0000000000414000-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	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
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	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe
Token: SeDebugPrivilege	420	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
3352	csrsll.exe
420	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 1296 wrote to memory of 3756	1296	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	82
PID 3756 wrote to memory of 4184	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	83
PID 3756 wrote to memory of 4184	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	83
PID 3756 wrote to memory of 4184	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	83
PID 4184 wrote to memory of 1528	4184	cmd.exe	86
PID 4184 wrote to memory of 1528	4184	cmd.exe	86
PID 4184 wrote to memory of 1528	4184	cmd.exe	86
PID 3756 wrote to memory of 3352	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	87
PID 3756 wrote to memory of 3352	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	87
PID 3756 wrote to memory of 3352	3756	a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe	87
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 420	3352	csrsll.exe	91
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92
PID 3352 wrote to memory of 1836	3352	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
"C:\Users\Admin\AppData\Local\Temp\a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Users\Admin\AppData\Local\Temp\a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe
  "C:\Users\Admin\AppData\Local\Temp\a577c9093b7c2ab460e661abd94f1f9937514e3665ff3109fa3af360f9b987dcN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3756
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FLCTK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4184
  - - 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:1528
- - 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:3352
  - - 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:420
  - - 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:1836

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\FLCTK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
c27542c6e48630122c80871dac22ee8d

SHA1
f9bd9583b23e31c47e5e85f5c32fdd4cb124dfa3

SHA256
ca2187175e51b13f0f48b468aaa0aee71e9794ceba87a04e42d71ccee9a2b35b

SHA512
745187f0970b3069b5bc263c5759b2346da882b605d754323485274462e2c8d1cc82db5687d70647f6a470e284311cc32d15de277ab8f17307af0c061f108870

Download Submit
memory/420-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1296-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1296-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1296-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1296-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-8-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/1296-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1836-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1836-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1836-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1836-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1836-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1836-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3352-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3352-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3352-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3756-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3756-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3756-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads