modiloader | f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3

Analysis

max time kernel
119s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20/01/2025, 17:07

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General

Target

f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
Size

90KB
MD5

ab981f1f8f99d7f63e37881984ac2010
SHA1

4e8ee33a65eccb6a5a6c3a0f5c66cfb42efecbe3
SHA256

f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3
SHA512

a4d1881ea4854db2c9a4659b2ea288d87515d5c2894490a85acc3bcc74e30603c57190d74dc861be5cb69a8c17ba5c6eb501c683cf716e83c6c915426b3c2e42
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD/:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3J

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/2376-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2376-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2376-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2376-61-0x0000000000400000-0x0000000000414000-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	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe

Executes dropped EXE 3 IoCs

pid	Process
3676	csrsll.exe
1676	csrsll.exe
2376	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 2040 set thread context of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 3676 set thread context of 1676	3676	csrsll.exe	92
PID 3676 set thread context of 2376	3676	csrsll.exe	93

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2040-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2040-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1116-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1116-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2040-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1116-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cbb-30.dat	upx
behavioral2/memory/1116-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3676-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3676-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2376-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2376-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2376-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2376-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2376-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3676-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1116-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1676-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2376-61-0x0000000000400000-0x0000000000414000-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	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.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	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe
Token: SeDebugPrivilege	1676	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
3676	csrsll.exe
1676	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 2040 wrote to memory of 1116	2040	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	82
PID 1116 wrote to memory of 4936	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	83
PID 1116 wrote to memory of 4936	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	83
PID 1116 wrote to memory of 4936	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	83
PID 4936 wrote to memory of 4928	4936	cmd.exe	86
PID 4936 wrote to memory of 4928	4936	cmd.exe	86
PID 4936 wrote to memory of 4928	4936	cmd.exe	86
PID 1116 wrote to memory of 3676	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	87
PID 1116 wrote to memory of 3676	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	87
PID 1116 wrote to memory of 3676	1116	f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe	87
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 1676	3676	csrsll.exe	92
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93
PID 3676 wrote to memory of 2376	3676	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
"C:\Users\Admin\AppData\Local\Temp\f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe
  "C:\Users\Admin\AppData\Local\Temp\f63b36bd16f1514c222d3b1430fc33950c6cb65fb27105a87cbf28d1214e17b3N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1116
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NBEPR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4936
  - - 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:4928
- - 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:3676
  - - 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:1676
  - - 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:2376

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\NBEPR.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
7c56c114f5577a87e0e938722037b991

SHA1
e9b76296172ab35fac00ea8c9baa74affb5b205e

SHA256
b0ea32674cbb3f11aee99ed6b12f844ff93b0d2f2463308f7e10667c6274b712

SHA512
a440120426609669f3fa87d6ae743642ebd8a0f488c0712330890df3a674d3cb08b531f7bba21d3256899503c445a8d257c1e2c7178957689dab0fbf36f65f02

Download Submit
memory/1116-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1116-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1116-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1116-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1116-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1676-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2040-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2040-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/2040-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2040-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2040-4-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2040-7-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/2040-3-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/2376-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2376-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2376-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2376-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2376-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2376-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3676-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3676-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3676-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads