modiloader | 99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3

Analysis

max time kernel
119s
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
16-12-2024 03:05

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General

Target

99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
Size

94KB
MD5

9fd32c193f22474bf0eba6b411c70ef0
SHA1

792f9fb215a8a0820bf8a7b5d422799d1fa3df3f
SHA256

99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3
SHA512

1bda9b4dc79d0206b55a2257a1cbf485e5ad8bbd7f850bdf8ed06a4cf85c85132fa6f67b66288b1d2ab02f16e6a288b384efd259350d5754f97ae2acad05c58b
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/:/pdyLALwACPmV3NYaYLiwIt3raA5BRfM

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/1088-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1088-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1088-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1088-59-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe

Executes dropped EXE 3 IoCs

pid	Process
3520	csrsll.exe
2184	csrsll.exe
1088	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-1-5-21-940901362-3608833189-1915618603-1000\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 4512 set thread context of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 3520 set thread context of 2184	3520	csrsll.exe	90
PID 3520 set thread context of 1088	3520	csrsll.exe	91

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4512-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1280-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1280-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1280-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4512-13-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/files/0x000b000000023b96-27.dat	upx
behavioral2/memory/3520-34-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3520-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3520-39-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1088-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1088-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1088-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1280-49-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1088-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1088-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3520-56-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1280-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2184-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1088-59-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe
Token: SeDebugPrivilege	2184	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
3520	csrsll.exe
2184	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 4512 wrote to memory of 1280	4512	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	83
PID 1280 wrote to memory of 1408	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	84
PID 1280 wrote to memory of 1408	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	84
PID 1280 wrote to memory of 1408	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	84
PID 1408 wrote to memory of 3336	1408	cmd.exe	88
PID 1408 wrote to memory of 3336	1408	cmd.exe	88
PID 1408 wrote to memory of 3336	1408	cmd.exe	88
PID 1280 wrote to memory of 3520	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	89
PID 1280 wrote to memory of 3520	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	89
PID 1280 wrote to memory of 3520	1280	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	89
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 2184	3520	csrsll.exe	90
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91
PID 3520 wrote to memory of 1088	3520	csrsll.exe	91

C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
"C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
  "C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AWVMD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1408
  - - 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:3336
- - 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:2184
  - - 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:1088

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\AWVMD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
05a7d0dbc37985a2d62a08afa9bd387e

SHA1
3f628bf3ea450f2466446b39880d1e96004a5ad1

SHA256
e5bd3a558ca7f983a3a654efe449c5e509c71d6d9ded1238bc062dce3db1920c

SHA512
238580fb6818b8eb2c46bf8addc3aaf8af2c31627750f45daca73b400c359cadea883a1a68cabe1a39a1f5993d754e3553d0dddb27a46efedbd335b58b6dc0e4

Download Submit
memory/1088-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1088-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1088-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1088-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1088-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1088-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1280-49-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1280-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1280-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1280-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1280-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2184-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3520-56-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3520-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3520-39-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3520-34-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4512-13-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4512-4-0x0000000002B90000-0x0000000002B91000-memory.dmp

Filesize
4KB

Download
memory/4512-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4512-3-0x0000000002B60000-0x0000000002B61000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads