modiloader | fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575b

Resubmissions

16/12/2024, 19:08

241216-xtpkmsynfn 10

16/12/2024, 19:04

241216-xq3yvsxqfv 10

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
16/12/2024, 19:04

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General

Target

fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
Size

90KB
MD5

2572f7614e1f21ba220665922c12e540
SHA1

3bdcbb22e73dbc50ba244408e48fa288c519df70
SHA256

fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575b
SHA512

3fd365da6287323d8c09261caae5d053d3e1839a0503271cf649a70dfaab8684e43ba5a392600e29e2505e36df07f0cd09eb34e44de98588028b6579fbc19df8
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD9:0wjZQJvzZsgsW6/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/3296-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3296-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3296-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3296-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe

Executes dropped EXE 3 IoCs

pid	Process
2608	csrsll.exe
624	csrsll.exe
3296	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-1-5-21-3227495264-2217614367-4027411560-1000\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 1388 set thread context of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 2608 set thread context of 624	2608	csrsll.exe	94
PID 2608 set thread context of 3296	2608	csrsll.exe	95

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1388-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1388-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4076-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4076-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1388-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4076-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b86-29.dat	upx
behavioral2/memory/4076-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2608-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2608-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3296-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3296-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3296-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3296-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3296-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2608-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4076-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/624-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3296-62-0x0000000000400000-0x0000000000414000-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	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.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	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe
Token: SeDebugPrivilege	624	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
2608	csrsll.exe
624	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 1388 wrote to memory of 4076	1388	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	83
PID 4076 wrote to memory of 4940	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	84
PID 4076 wrote to memory of 4940	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	84
PID 4076 wrote to memory of 4940	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	84
PID 4940 wrote to memory of 4252	4940	cmd.exe	87
PID 4940 wrote to memory of 4252	4940	cmd.exe	87
PID 4940 wrote to memory of 4252	4940	cmd.exe	87
PID 4076 wrote to memory of 2608	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	88
PID 4076 wrote to memory of 2608	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	88
PID 4076 wrote to memory of 2608	4076	fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe	88
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 624	2608	csrsll.exe	94
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95
PID 2608 wrote to memory of 3296	2608	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
"C:\Users\Admin\AppData\Local\Temp\fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe
  "C:\Users\Admin\AppData\Local\Temp\fdf4b173824222e963fd6530874d13b8d4b3eb161afdc51a6a858fd4c1a3575bN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4076
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WMIHU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - 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:4252
- - 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:2608
  - - 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:624
  - - 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:3296

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\WMIHU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
663ad7f6de19dd1a2145c291ade50077

SHA1
8f9a23aa0f52924aa5e3a22b3e7aa39cf46e3d52

SHA256
c7c672db27fda5a782a209178f78b639617f38f66080fb84c39838fb8e24583a

SHA512
87b62be4cf692b88171c19c606daaff5f542154964d260b2fbe85abd5a179081ff5fd65052fbe70e99c182c43d3533e556f3c4de8d45c49ce94d08c708f0b43e

Download Submit
memory/624-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1388-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1388-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1388-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/1388-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1388-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1388-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2608-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2608-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2608-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3296-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3296-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3296-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3296-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3296-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3296-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4076-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4076-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4076-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4076-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4076-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads