modiloader | fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 16:22

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General

Target

fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
Size

90KB
MD5

63257fc21ad91e52255f0bca7900df30
SHA1

89d6b597a237a70eda1b488e82f08eff21350e21
SHA256

fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371
SHA512

5702d2c87713dfe3f6dd570ded56d8f4b0c7dbbaedfde26968f190be98c414689fae1123c2b64bc562d1e395922e82f18cba1965d59917cc5ac4b18d226eb059
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDP:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/2728-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2728-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2728-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2728-63-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe

Executes dropped EXE 3 IoCs

pid	Process
2628	csrsll.exe
2336	csrsll.exe
2728	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-1-5-21-1045960512-3948844814-3059691613-1000\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 3812 set thread context of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 2628 set thread context of 2336	2628	csrsll.exe	102
PID 2628 set thread context of 2728	2628	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3812-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3812-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3608-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3608-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3812-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3608-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b7c-30.dat	upx
behavioral2/memory/3608-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2628-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2628-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2728-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2628-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2728-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2728-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2728-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3608-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2728-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2336-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2728-63-0x0000000000400000-0x0000000000414000-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	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	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe
Token: SeDebugPrivilege	2336	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
2628	csrsll.exe
2336	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3812 wrote to memory of 3608	3812	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	86
PID 3608 wrote to memory of 3752	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	91
PID 3608 wrote to memory of 3752	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	91
PID 3608 wrote to memory of 3752	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	91
PID 3752 wrote to memory of 1992	3752	cmd.exe	95
PID 3752 wrote to memory of 1992	3752	cmd.exe	95
PID 3752 wrote to memory of 1992	3752	cmd.exe	95
PID 3608 wrote to memory of 2628	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	96
PID 3608 wrote to memory of 2628	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	96
PID 3608 wrote to memory of 2628	3608	fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe	96
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2336	2628	csrsll.exe	102
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103
PID 2628 wrote to memory of 2728	2628	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
"C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3812
- C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe
  "C:\Users\Admin\AppData\Local\Temp\fbc297cb8f632096572eae2e15cecaa9ea7f1dfeab5f4c61d3b3f34051b33371N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3608
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UUHJE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3752
  - - 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:1992
- - 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:2628
  - - 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:2336
  - - 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:2728

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\UUHJE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
868e700be9a96facd0c1a1a448121936

SHA1
4a9378bacdf468d50ed19b4a86b4553b9e138c02

SHA256
7238582e0e67935783bccbe9ff256cc24de762d783334c2c25a391640ab07e7d

SHA512
5b9cd7ab5d4357bfcd19eacbf2879bf59548fcac58149092f2b2d566a8af9a0f3c14422932554ceb937f76a3f3a4398a1ea41ae22e1bfb1c54b599dcf03c667f

Download Submit
memory/2336-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2628-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2628-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2628-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2728-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3608-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3608-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3608-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3608-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3608-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3812-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3812-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3812-7-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/3812-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3812-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3812-4-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3812-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads