modiloader | 31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4

Analysis

max time kernel
150s
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
02-01-2025 19:30

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General

Target

31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
Size

90KB
MD5

029b98fc43f56e951cbc5ce4e2f25737
SHA1

743dd358edb156f04bb5077fe53492e7116ed778
SHA256

31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4
SHA512

06ec4abe7f527cd36fcd9235d0142a2259533902bbe1598d435efc37dece108822542afac6ddc73db11ed0cad8cc4dd916d57140807bf35037f3f836b5deed26
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDg:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3C

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/4588-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4588-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4588-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4588-63-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe

Executes dropped EXE 3 IoCs

pid	Process
2496	csrsll.exe
840	csrsll.exe
4588	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 1800 set thread context of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 2496 set thread context of 840	2496	csrsll.exe	99
PID 2496 set thread context of 4588	2496	csrsll.exe	100

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1800-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1800-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1372-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1800-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1372-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1372-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cd6-29.dat	upx
behavioral2/memory/1372-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2496-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2496-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4588-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4588-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4588-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4588-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4588-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2496-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1372-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/840-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4588-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
2496	csrsll.exe
840	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1800 wrote to memory of 1372	1800	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	83
PID 1372 wrote to memory of 1688	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	86
PID 1372 wrote to memory of 1688	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	86
PID 1372 wrote to memory of 1688	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	86
PID 1688 wrote to memory of 4252	1688	cmd.exe	91
PID 1688 wrote to memory of 4252	1688	cmd.exe	91
PID 1688 wrote to memory of 4252	1688	cmd.exe	91
PID 1372 wrote to memory of 2496	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	93
PID 1372 wrote to memory of 2496	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	93
PID 1372 wrote to memory of 2496	1372	31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe	93
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 840	2496	csrsll.exe	99
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100
PID 2496 wrote to memory of 4588	2496	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
"C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe
  "C:\Users\Admin\AppData\Local\Temp\31d2b026c628d2b6948feeda44e24893abddfede21a0755a7d07656e505106b4.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YOPMV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - 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:4252
- - 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:2496
  - - 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:840
  - - 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:4588

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\YOPMV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
61bce3413e36474a728b0c24f98f3da7

SHA1
36b5721d30c140955f664ba7ae71e14aa8daa641

SHA256
1cabb2028fc7c0fd2a5fc4bb8478579e9b9d8902ca57e80a2bea5ce237e710e3

SHA512
8889df9e1822824e9c85c5f9b41905b601282c69599a769e313c48ca517e6c1422b78f29f2e5eef26628e49f45d78b3f21f94062b500e1b2a1016c434d8159b6

Download Submit
memory/840-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1372-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1800-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1800-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1800-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1800-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/1800-4-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/1800-3-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/2496-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2496-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2496-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4588-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads