modiloader | 2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa

Analysis

max time kernel
119s
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
10-12-2024 06:52

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General

Target

2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
Size

90KB
MD5

3c208e984ce15417d5bc8150db278dab
SHA1

bbbc7fb2496f404ae87f43b52a4faca0a53f6c02
SHA256

2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa
SHA512

5b6ead3aa66c20c9f5234a235d7b7ba1f3545d062caf8fff257df6ebc1cbfd3feb44ed297dc020691b5e6ea35a0e761de9fbb54139cdc8aed9eef3cc5d28e77f
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDO:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3E

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/3468-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3468-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3468-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3468-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe

Executes dropped EXE 3 IoCs

pid	Process
3732	csrsll.exe
720	csrsll.exe
3468	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-1-5-21-2437139445-1151884604-3026847218-1000\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 1652 set thread context of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 3732 set thread context of 720	3732	csrsll.exe	97
PID 3732 set thread context of 3468	3732	csrsll.exe	99

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1652-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2396-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2396-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2396-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1652-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb5-29.dat	upx
behavioral2/memory/2396-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3732-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3732-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3468-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3732-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2396-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/720-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3468-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.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	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe
Token: SeDebugPrivilege	720	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
3732	csrsll.exe
720	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 1652 wrote to memory of 2396	1652	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	83
PID 2396 wrote to memory of 2364	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	84
PID 2396 wrote to memory of 2364	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	84
PID 2396 wrote to memory of 2364	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	84
PID 2364 wrote to memory of 3608	2364	cmd.exe	88
PID 2364 wrote to memory of 3608	2364	cmd.exe	88
PID 2364 wrote to memory of 3608	2364	cmd.exe	88
PID 2396 wrote to memory of 3732	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	89
PID 2396 wrote to memory of 3732	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	89
PID 2396 wrote to memory of 3732	2396	2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe	89
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 720	3732	csrsll.exe	97
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99
PID 3732 wrote to memory of 3468	3732	csrsll.exe	99

C:\Users\Admin\AppData\Local\Temp\2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
"C:\Users\Admin\AppData\Local\Temp\2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe
  "C:\Users\Admin\AppData\Local\Temp\2f3331c57ab433e495e53bceaf3950c8387d8b62c5abbf60348ba94f00a0f3aa.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XWSTG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2364
  - - 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:3608
- - 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:3732
  - - 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:720
  - - 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:3468

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\XWSTG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6482761047a0bb2717253b65eb499fa4

SHA1
2c2d0b4a3f324344a5fc994119da44d92c0fac1f

SHA256
ff8861ae41d759fea974637edcea2dd8b7baac4fd303c3a39f6e5edf3119ce76

SHA512
03cc0417560fe7389fc533d8f7429d266143452753f001c86ec8f339d5643525a560a923c047606e631fe82024dd0e79a53020ca3d488249b08b36044e1b65f0

Download Submit
memory/720-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1652-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1652-6-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1652-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1652-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1652-4-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1652-3-0x00000000022D0000-0x00000000022D2000-memory.dmp

Filesize
8KB

Download
memory/2396-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2396-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2396-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2396-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2396-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2396-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3468-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3732-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3732-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3732-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads