modiloader | 57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85

Analysis

max time kernel
118s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 02:19

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General

Target

57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
Size

90KB
MD5

f0b2a3e8cc8d67f7856c6449dc41ae90
SHA1

7f43547b157e8e3a94dcac6b311c4719dff728ae
SHA256

57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85
SHA512

ac6958f782f6a33dcb0ee181eca5983a475179923f76b6f9cbf7dab3ee63eb4bb57359e07f4621420d385bbcc0463e34a75d8958217b2fc7c8905acdc3283a98
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDA:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3+

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/872-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/872-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/872-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/872-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe

Executes dropped EXE 3 IoCs

pid	Process
1292	csrsll.exe
4876	csrsll.exe
872	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-1-5-21-3756129449-3121373848-4276368241-1000\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 2364 set thread context of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 1292 set thread context of 4876	1292	csrsll.exe	88
PID 1292 set thread context of 872	1292	csrsll.exe	89

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2364-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2364-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1884-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1884-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1884-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2364-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b7a-28.dat	upx
behavioral2/memory/1884-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1292-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1292-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/872-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/872-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/872-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/872-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1292-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/872-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1884-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4876-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/872-61-0x0000000000400000-0x0000000000414000-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	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1292	csrsll.exe
4876	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 2364 wrote to memory of 1884	2364	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	82
PID 1884 wrote to memory of 2836	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	83
PID 1884 wrote to memory of 2836	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	83
PID 1884 wrote to memory of 2836	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	83
PID 2836 wrote to memory of 3892	2836	cmd.exe	86
PID 2836 wrote to memory of 3892	2836	cmd.exe	86
PID 2836 wrote to memory of 3892	2836	cmd.exe	86
PID 1884 wrote to memory of 1292	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	87
PID 1884 wrote to memory of 1292	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	87
PID 1884 wrote to memory of 1292	1884	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	87
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 4876	1292	csrsll.exe	88
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89
PID 1292 wrote to memory of 872	1292	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
"C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
  "C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FBXWA.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - 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:3892
- - 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:1292
  - - 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:4876
  - - 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:872

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\FBXWA.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
545883e52690721710640b1bae3f42b0

SHA1
41e44e9da635d35e855ae050d2d7c9753e4ed5e7

SHA256
6046736785a5bcc85918ac674e6a3c2e7c6525c3419095a8085a2e99d59d4fe3

SHA512
842203f5ae677ef2f8ef3993d24d9ae6b45d633709a75d63ea90c2fda41810c4327c8a47f60bd70ac437af8bef3549c5258ba042c986677691c8649c1b5a7ea0

Download Submit
memory/872-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/872-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/872-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/872-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/872-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/872-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1292-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1292-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1292-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1884-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1884-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1884-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1884-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1884-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2364-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2364-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2364-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/2364-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2364-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2364-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4876-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads