modiloader | 4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f

Analysis

max time kernel
120s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2024 01:49

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General

Target

4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
Size

94KB
MD5

6eedb0ad173ba58650164674ed5cc47d
SHA1

ce2886e070e129f16dc90823158a0884bb9eea20
SHA256

4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f
SHA512

dd14faf59645058f20c7e0df38e815e8a5048f4e05dc1239ee2cb6eecb55229e99457982ca6756260c199f96830995bab2b6f74f4299878eb37473c257ad65a5
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/0:/pdyLALwACPmV3NYaYLiwIt3raA5BRfr

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/5104-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5104-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5104-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5104-59-0x0000000000400000-0x0000000000414000-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	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe

Executes dropped EXE 3 IoCs

pid	Process
496	csrsll.exe
1880	csrsll.exe
5104	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 3204 set thread context of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 496 set thread context of 1880	496	csrsll.exe	88
PID 496 set thread context of 5104	496	csrsll.exe	89

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3204-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3324-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3324-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3324-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3204-13-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/files/0x0008000000023cc1-27.dat	upx
behavioral2/memory/496-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/496-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/5104-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5104-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5104-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/496-55-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/5104-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5104-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1880-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5104-59-0x0000000000400000-0x0000000000414000-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	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.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	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe
Token: SeDebugPrivilege	1880	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
496	csrsll.exe
1880	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3204 wrote to memory of 3324	3204	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	82
PID 3324 wrote to memory of 5056	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	83
PID 3324 wrote to memory of 5056	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	83
PID 3324 wrote to memory of 5056	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	83
PID 5056 wrote to memory of 2072	5056	cmd.exe	86
PID 5056 wrote to memory of 2072	5056	cmd.exe	86
PID 5056 wrote to memory of 2072	5056	cmd.exe	86
PID 3324 wrote to memory of 496	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	87
PID 3324 wrote to memory of 496	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	87
PID 3324 wrote to memory of 496	3324	4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe	87
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 1880	496	csrsll.exe	88
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89
PID 496 wrote to memory of 5104	496	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
"C:\Users\Admin\AppData\Local\Temp\4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe
  "C:\Users\Admin\AppData\Local\Temp\4940d8fb4b9f2eb6375e5796641dab43b6095dbefe612594db1aac09c68ce97f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CSTQY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5056
  - - 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:2072
- - 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:496
  - - 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:1880
  - - 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:5104

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\CSTQY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
f15526def228e852c8d4b035b2bdd034

SHA1
12ce83b2feffd8bfe98ff64741569c11a44b85c8

SHA256
613de4f2abbfe4c3180d67c01c8900b2da51711efc7fb8699dbf9bdf54b01007

SHA512
de5b1d73f93223ded06bde19c8dcda1c809bde1467189aceeb89c8dad0341c707cf323cf5c617c79bb4a53c8a8c6f734e6c4815c286cafb4b363793bcb8da496

Download Submit
memory/496-55-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/496-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/496-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1880-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3204-3-0x0000000002320000-0x0000000002321000-memory.dmp

Filesize
4KB

Download
memory/3204-13-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3204-4-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/3324-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3324-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5104-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5104-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5104-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5104-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5104-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5104-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads