modiloader | 1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873

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
09-11-2024 16:56

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General

Target

1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
Size

90KB
MD5

a9c23a3c54fccb38f85e76d76d2ecf00
SHA1

03dea8923457a00d285f117ac2ecfede8f74a99a
SHA256

1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873
SHA512

f1ea0b03909b6700dfe66aba3faee9d38e0d43e747182afc86708f4b347bf8a0b025aef1a9ed045bc23492bc5e2f0fed22d6af7824310e6fd84191df2aa7b567
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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/5076-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5076-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5076-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5076-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe

Executes dropped EXE 3 IoCs

pid	Process
3468	csrsll.exe
1148	csrsll.exe
5076	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-1-5-21-3350944739-639801879-157714471-1000\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 2356 set thread context of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 3468 set thread context of 1148	3468	csrsll.exe	103
PID 3468 set thread context of 5076	3468	csrsll.exe	104

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2356-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2356-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1528-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1528-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1528-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2356-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000f000000023b28-29.dat	upx
behavioral2/memory/3468-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1528-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3468-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3468-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5076-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5076-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5076-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5076-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5076-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1528-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1148-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5076-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe
Token: SeDebugPrivilege	1148	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
3468	csrsll.exe
1148	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 2356 wrote to memory of 1528	2356	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	93
PID 1528 wrote to memory of 2936	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	94
PID 1528 wrote to memory of 2936	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	94
PID 1528 wrote to memory of 2936	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	94
PID 2936 wrote to memory of 1604	2936	cmd.exe	98
PID 2936 wrote to memory of 1604	2936	cmd.exe	98
PID 2936 wrote to memory of 1604	2936	cmd.exe	98
PID 1528 wrote to memory of 3468	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	99
PID 1528 wrote to memory of 3468	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	99
PID 1528 wrote to memory of 3468	1528	1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe	99
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 1148	3468	csrsll.exe	103
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104
PID 3468 wrote to memory of 5076	3468	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
"C:\Users\Admin\AppData\Local\Temp\1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe
  "C:\Users\Admin\AppData\Local\Temp\1bc38ab10169bf8c2ee5361c3e421eca347c66f591e2b634075d3c99600ad873N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1528
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IMJJV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - 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:1604
- - 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:3468
  - - 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:1148
  - - 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:5076

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\IMJJV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
750441495ec61802989155909ab648fe

SHA1
7a6c2052688ec1e5b1b85428f2795a17ef7d5b24

SHA256
458fcf670a8c7b15d3f4a5b5847e5890fcddba9299835172d788c1e52964eef3

SHA512
80cf118ae8176d9d6f1fd0427c520d73ea3b8d7f337ef5de4dbba4c366286fdbcfc2604f05d66034b9ed5c0ee1f758adb85208f82a00b926cf901524ff6df672

Download Submit
memory/1148-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1528-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2356-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2356-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2356-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2356-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2356-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2356-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3468-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3468-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3468-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3468-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5076-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5076-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5076-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5076-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5076-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5076-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads