modiloader | 0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17-09-2024 14:42

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General

Target

0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
Size

90KB
MD5

89349f738a34cdc72af107da1095b760
SHA1

36a5101ea1b983b2b824cc7a729f625fe912ab51
SHA256

0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99
SHA512

76d3a517792d98b41571839b1a81171663f7a5151ba60b082aecc818c8066dbd6a68c5f98192de8a005f41eb078029bc20d671ce2a8a95f19d49d201f0f54024
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1416-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1416-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1416-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1416-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe

Executes dropped EXE 3 IoCs

pid	Process
1708	csrsll.exe
1516	csrsll.exe
1416	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4000-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4000-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1376-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1376-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1376-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4000-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023440-29.dat	upx
behavioral2/memory/1708-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1376-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1708-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1708-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1416-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1416-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1708-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1416-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1416-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1416-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1376-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1516-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1416-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-2412658365-3084825385-3340777666-1000\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 4000 set thread context of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 1708 set thread context of 1516	1708	csrsll.exe	95
PID 1708 set thread context of 1416	1708	csrsll.exe	96

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	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.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	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe
Token: SeDebugPrivilege	1516	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
1708	csrsll.exe
1516	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 4000 wrote to memory of 1376	4000	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	87
PID 1376 wrote to memory of 1800	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	88
PID 1376 wrote to memory of 1800	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	88
PID 1376 wrote to memory of 1800	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	88
PID 1800 wrote to memory of 2288	1800	cmd.exe	91
PID 1800 wrote to memory of 2288	1800	cmd.exe	91
PID 1800 wrote to memory of 2288	1800	cmd.exe	91
PID 1376 wrote to memory of 1708	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	93
PID 1376 wrote to memory of 1708	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	93
PID 1376 wrote to memory of 1708	1376	0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe	93
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1516	1708	csrsll.exe	95
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96
PID 1708 wrote to memory of 1416	1708	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
"C:\Users\Admin\AppData\Local\Temp\0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Users\Admin\AppData\Local\Temp\0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe
  "C:\Users\Admin\AppData\Local\Temp\0f583e89a96efb3e57b542341426d2c7e202c818bf3bda34ce593aaea9d71f99N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NXRPS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1800
  - - 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:2288
- - 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:1708
  - - 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:1516
  - - 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:1416

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a79bdc6cc2410e4ceb709039d19308e3

SHA1
28b1da50ff61b3bbc6f28d7e463fb586b29812c0

SHA256
898aea556bbefb97205b46bea471e8f467c5ca0cd5db902d7c35071fddc64c27

SHA512
8e66fc86533ec70cc42619388d18123825456d35059c4c618797a410ed47839e5e56672e24bdc3bfe76e55127c8cd419be559289a3439a1948c99ec483c08d7e

Download Submit
memory/1376-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1376-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1376-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1376-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1376-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1416-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1416-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1416-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1416-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1416-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1416-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1516-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1708-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1708-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1708-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1708-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4000-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/4000-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4000-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads