modiloader | f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 04:35

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General

Target

f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
Size

90KB
MD5

a80d1d4e217eb4157a5f36b68ee18fd2
SHA1

43ddd9da7fd71a67fd5d6a27ab940bdf5b14058b
SHA256

f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0
SHA512

8f2feaa013b848133083f757f02e24a0b4a68158bbd5b03b5680f206be2252c6b1213e682014a08b48b105bc134d2a221af53c176d2f9db1a3dc937020bd8444
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDH:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3l

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/536-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/536-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/536-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/536-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe

Executes dropped EXE 3 IoCs

pid	Process
4384	csrsll.exe
5100	csrsll.exe
536	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 3248 set thread context of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 4384 set thread context of 5100	4384	csrsll.exe	95
PID 4384 set thread context of 536	4384	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3248-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3248-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3520-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3520-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3520-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3248-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb2-29.dat	upx
behavioral2/memory/3520-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4384-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4384-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/536-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/536-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/536-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/536-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4384-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3520-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5100-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/536-62-0x0000000000400000-0x0000000000414000-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	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	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe
Token: SeDebugPrivilege	5100	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
4384	csrsll.exe
5100	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3248 wrote to memory of 3520	3248	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	86
PID 3520 wrote to memory of 876	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	88
PID 3520 wrote to memory of 876	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	88
PID 3520 wrote to memory of 876	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	88
PID 876 wrote to memory of 4672	876	cmd.exe	91
PID 876 wrote to memory of 4672	876	cmd.exe	91
PID 876 wrote to memory of 4672	876	cmd.exe	91
PID 3520 wrote to memory of 4384	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	92
PID 3520 wrote to memory of 4384	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	92
PID 3520 wrote to memory of 4384	3520	f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe	92
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 5100	4384	csrsll.exe	95
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96
PID 4384 wrote to memory of 536	4384	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
"C:\Users\Admin\AppData\Local\Temp\f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Users\Admin\AppData\Local\Temp\f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe
  "C:\Users\Admin\AppData\Local\Temp\f1bd1f14a2d81716177eaecefccb331ec769c25536c93334030998db9e22e7b0.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3520
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LJNIQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:876
  - - 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:4672
- - 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:4384
  - - 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:5100
  - - 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:536

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\LJNIQ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
cf4ee765da7d22020836f7baffd0968c

SHA1
08e67bf6312c54ee9756f58a58b6c3bd1d8d35f2

SHA256
c6de0520e48985aa37c408032260008ea0a7ad30fa1dbb6768f4e5c03e536997

SHA512
d3982c62b0b208dfa139a8dd8bf072e45b6e54cf138aa26a1e50df0c88719b145c398cf28d6fe1c4ee31c97ea048f4ed4b5b90b46cc7422e1890ce3edbf8b133

Download Submit
memory/536-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/536-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/536-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/536-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/536-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/536-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3248-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3248-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3248-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/3248-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3248-4-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/3248-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3520-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3520-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3520-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3520-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3520-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4384-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4384-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4384-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5100-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads