modiloader | f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 03:10

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General

Target

f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
Size

90KB
MD5

fc5d916afc8d4de8920ac4411a57f436
SHA1

27ddd6242e143d3724817cfd6ee2615222b3bcd8
SHA256

f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851
SHA512

6556de6b26a3c65c48a99e25a87fcd40229d9fe8ff2e94e5136dba90ec66c2ee6b0d551876b45029f7a434ad319b72c5b4930282dc34871676d6e5ed76ff1323
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3n

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/3588-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3588-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3588-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3588-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe

Executes dropped EXE 3 IoCs

pid	Process
1416	csrsll.exe
988	csrsll.exe
3588	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-1-5-21-3442511616-637977696-3186306149-1000\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 2208 set thread context of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 1416 set thread context of 988	1416	csrsll.exe	88
PID 1416 set thread context of 3588	1416	csrsll.exe	89

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2208-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2208-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3472-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3472-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2208-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3472-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b7a-29.dat	upx
behavioral2/memory/3472-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1416-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1416-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3588-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3588-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3588-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3588-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3588-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1416-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3472-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/988-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3588-61-0x0000000000400000-0x0000000000414000-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	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe
Token: SeDebugPrivilege	988	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
1416	csrsll.exe
988	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 2208 wrote to memory of 3472	2208	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	82
PID 3472 wrote to memory of 1364	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	83
PID 3472 wrote to memory of 1364	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	83
PID 3472 wrote to memory of 1364	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	83
PID 1364 wrote to memory of 1220	1364	cmd.exe	86
PID 1364 wrote to memory of 1220	1364	cmd.exe	86
PID 1364 wrote to memory of 1220	1364	cmd.exe	86
PID 3472 wrote to memory of 1416	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	87
PID 3472 wrote to memory of 1416	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	87
PID 3472 wrote to memory of 1416	3472	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	87
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 988	1416	csrsll.exe	88
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89
PID 1416 wrote to memory of 3588	1416	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
"C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
  "C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FOYWG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1364
  - - 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:1220
- - 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:1416
  - - 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:988
  - - 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:3588

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\FOYWG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
fe7bebb7a2beb1b64d7483b19c60bc9e

SHA1
b9ed0ad981e3125485acf9b22b18c54769b9d03a

SHA256
835c4d27dd63bf29eb9ef6540da66138c8cc665fee8a5895fbe6e3ae84e0796e

SHA512
70fe355c5ab81c53c5fe238698d341555c40994e04bf1d3ff0885c8cad4e5ec1d172e0f83e3c44149e6a6b9e729796611e980f251eb712692ed196d31b333193

Download Submit
memory/988-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1416-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1416-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1416-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2208-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2208-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2208-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2208-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2208-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2208-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3472-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3472-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3472-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3472-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3472-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3472-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3588-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3588-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3588-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3588-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3588-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3588-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads