modiloader | 40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456f

Analysis

max time kernel
118s
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
07-01-2025 01:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
Size

90KB
MD5

ff8fe37b6ad4d5d828c4d429fa6fb0f0
SHA1

7b17209f68e28521cde449e1a7a1e9808013c006
SHA256

40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456f
SHA512

fa3720feb987fd8992f61bc378b5e726e800798c7841ac41225a588ee9454a833bffc3cc671acae2027bda914688e5922f6b771044dc701f931ee0593f8620ef
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDB:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3H

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/3148-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-63-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe

Executes dropped EXE 3 IoCs

pid	Process
3520	csrsll.exe
4892	csrsll.exe
3148	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-1-5-21-4089630652-1596403869-279772308-1000\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 600 set thread context of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 3520 set thread context of 4892	3520	csrsll.exe	95
PID 3520 set thread context of 3148	3520	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/600-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/600-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/228-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/228-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/600-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/228-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cd0-29.dat	upx
behavioral2/memory/228-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3520-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3520-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3148-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3520-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/228-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4892-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3148-63-0x0000000000400000-0x0000000000414000-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	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe
Token: SeDebugPrivilege	4892	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
3520	csrsll.exe
4892	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 600 wrote to memory of 228	600	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	84
PID 228 wrote to memory of 552	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	85
PID 228 wrote to memory of 552	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	85
PID 228 wrote to memory of 552	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	85
PID 552 wrote to memory of 3932	552	cmd.exe	88
PID 552 wrote to memory of 3932	552	cmd.exe	88
PID 552 wrote to memory of 3932	552	cmd.exe	88
PID 228 wrote to memory of 3520	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	89
PID 228 wrote to memory of 3520	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	89
PID 228 wrote to memory of 3520	228	40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe	89
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 4892	3520	csrsll.exe	95
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96
PID 3520 wrote to memory of 3148	3520	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
"C:\Users\Admin\AppData\Local\Temp\40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:600
- C:\Users\Admin\AppData\Local\Temp\40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe
  "C:\Users\Admin\AppData\Local\Temp\40621cc8d9668da48dd7661bcc4ccf9094bd969e6fd60faa88ee788a2b87456fN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FDHCK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:552
  - - 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:3932
- - 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:3520
  - - 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:4892
  - - 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:3148

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\FDHCK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
79eac8ee924f37c29170044c796d9871

SHA1
f47f39564cb36b5b1e64592a34d0659a5c00fdb4

SHA256
e9d99ff66e84a6746c29afcdc90979b7f0586417e496e3b9dc89320352eee08b

SHA512
4b2c5d855f346cd57a022d8109f5c22fc30548d3950008cf24a8eec343a4fdc1c74f9a5de9b142a2b2d6ae38477dbebde0b9b596d69118c54753eab2ea38529e

Download Submit
memory/228-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/228-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/228-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/228-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/228-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/228-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/600-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/600-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/600-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/600-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/600-4-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/600-3-0x00000000022D0000-0x00000000022D2000-memory.dmp

Filesize
8KB

Download
memory/3148-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3520-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3520-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3520-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4892-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads