modiloader | 1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5

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
19-12-2024 23:48

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General

Target

1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe
Size

90KB
MD5

70db98843615e7e1e79f94a1013700c0
SHA1

599023bf0c108241e96f64e4bba0fb5dab4c1dbd
SHA256

1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5
SHA512

8481caed65c2630a248475fd6c4aaa51987474030e5a8c199fae03dc6ef2d508324ce8ec3af35159f3059f088dcbe2d31ccd6a5158579f10a0ddd1a02b987039
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDQ:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3u

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/4524-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4524-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4524-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4524-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe

Executes dropped EXE 3 IoCs

pid	Process
1528	csrsll.exe
5036	csrsll.exe
4524	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-1-5-21-3227495264-2217614367-4027411560-1000\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 2160 set thread context of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 1528 set thread context of 5036	1528	csrsll.exe	95
PID 1528 set thread context of 4524	1528	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2160-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2160-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5076-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5076-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5076-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2160-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b8c-29.dat	upx
behavioral2/memory/5076-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1528-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4524-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1528-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4524-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4524-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1528-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5076-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5036-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-62-0x0000000000400000-0x0000000000414000-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	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.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	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe
Token: SeDebugPrivilege	5036	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe
5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe
1528	csrsll.exe
5036	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 2160 wrote to memory of 5076	2160	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	86
PID 5076 wrote to memory of 456	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	87
PID 5076 wrote to memory of 456	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	87
PID 5076 wrote to memory of 456	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	87
PID 456 wrote to memory of 2996	456	cmd.exe	90
PID 456 wrote to memory of 2996	456	cmd.exe	90
PID 456 wrote to memory of 2996	456	cmd.exe	90
PID 5076 wrote to memory of 1528	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	91
PID 5076 wrote to memory of 1528	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	91
PID 5076 wrote to memory of 1528	5076	1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe	91
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 5036	1528	csrsll.exe	95
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96
PID 1528 wrote to memory of 4524	1528	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe
"C:\Users\Admin\AppData\Local\Temp\1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Users\Admin\AppData\Local\Temp\1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe
  "C:\Users\Admin\AppData\Local\Temp\1633c537a373b6ae5d3e2bd17239ffc0e55de04de4af46ac032e4fe6b3cd54c5N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BGUTG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:456
  - - 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:2996
- - 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:1528
  - - 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:5036
  - - 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:4524

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\BGUTG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e105b288a9818b19c975e9869cb9f8fa

SHA1
55c9a8b97fb8704230caf19e10cbfe2262e2977e

SHA256
a9937bfeb798d120745419a67e421aaf8ee7f735e520aa5b6d8be3da318210a9

SHA512
b1e0167d144322d2ee06024abbdb340f7dbf72eaa67a6e7cc2ec663b43cbca12ad17d8768bd7333e5d31e6a7f214b7115eb87239dfeb88d7084d1fa4f897b1d7

Download Submit
memory/1528-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1528-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1528-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2160-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/2160-4-0x0000000002C60000-0x0000000002C62000-memory.dmp

Filesize
8KB

Download
memory/2160-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2160-6-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/2160-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2160-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4524-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4524-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4524-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4524-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4524-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4524-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5036-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5076-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5076-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5076-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5076-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5076-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/5076-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads