modiloader | f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 05:56

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General

Target

f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
Size

90KB
MD5

7cdb8148385fba1ada9241e9a293313d
SHA1

0f372c5bcc7c6d5578d9a59f9c874b4fc82214b3
SHA256

f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f
SHA512

eef78c4285cdc55c0586e9ccde39a3d6fd25f225531224a407fd636849f35fe3590c0191809b926299da6af3f2d8a0cb29c450c36ab2d1c0d5dcbcb694f54573
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDz:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE39

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/4452-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4452-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4452-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4452-61-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe

Executes dropped EXE 3 IoCs

pid	Process
3732	csrsll.exe
1504	csrsll.exe
4452	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-1-5-21-940901362-3608833189-1915618603-1000\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 4852 set thread context of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 3732 set thread context of 1504	3732	csrsll.exe	97
PID 3732 set thread context of 4452	3732	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4852-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4696-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4696-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4696-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4852-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023ca7-29.dat	upx
behavioral2/memory/4696-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3732-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3732-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4452-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4452-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4452-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4452-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4452-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3732-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4696-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1504-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4452-61-0x0000000000400000-0x0000000000414000-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	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.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	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe
Token: SeDebugPrivilege	1504	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
3732	csrsll.exe
1504	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4852 wrote to memory of 4696	4852	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	83
PID 4696 wrote to memory of 2952	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 4696 wrote to memory of 2952	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 4696 wrote to memory of 2952	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	84
PID 2952 wrote to memory of 2256	2952	cmd.exe	88
PID 2952 wrote to memory of 2256	2952	cmd.exe	88
PID 2952 wrote to memory of 2256	2952	cmd.exe	88
PID 4696 wrote to memory of 3732	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	89
PID 4696 wrote to memory of 3732	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	89
PID 4696 wrote to memory of 3732	4696	f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe	89
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 1504	3732	csrsll.exe	97
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98
PID 3732 wrote to memory of 4452	3732	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
"C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe
  "C:\Users\Admin\AppData\Local\Temp\f558fa7a9519ee30a5c0c17911daca00f1e1e2d8179a2653f84e8faaf6a9b99f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4696
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FSSEM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2952
  - - 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:2256
- - 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:3732
  - - 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:1504
  - - 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:4452

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\FSSEM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
fd9d32584c20471f6fc11164b92d0906

SHA1
2f8f964b718cda266654bcc8e7c53b93d6026a49

SHA256
f465d003ca1e507d8c19aa0c1cd54375ee837f3294f020c6b4f26a62d01d9fdd

SHA512
8540ba460b1988ca3f7116072abd695891bee5954e24a61f99d4812bbd44c191b049936a1f31ba1f29a3021856ca8e78ef3e7e812bb277fe7a37dbd311fbd915

Download Submit
memory/1504-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3732-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3732-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3732-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4452-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4452-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4452-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4452-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4452-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4452-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4696-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4696-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4696-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4696-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4696-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4852-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4852-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/4852-4-0x0000000002C70000-0x0000000002C72000-memory.dmp

Filesize
8KB

Download
memory/4852-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4852-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4852-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads