modiloader | 3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2024, 14:26

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General

Target

3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
Size

90KB
MD5

bc7ced3763ca9191dd6376ee9c0fcd28
SHA1

fa8c474704a4113364c1734020030afd05a51d85
SHA256

3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003
SHA512

73ea35336518fd799810512904ffe734f6669167435f74da1e62bfaec58aab6a49ba31d5fa8c8fb6c84c7b63bd16a9961ec438dbbb5f4990a775f8ee97f2de49
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDM:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3S

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/2596-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2596-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2596-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2596-64-0x0000000000400000-0x0000000000414000-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	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe

Executes dropped EXE 3 IoCs

pid	Process
2420	csrsll.exe
4364	csrsll.exe
2596	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 2340 set thread context of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2420 set thread context of 4364	2420	csrsll.exe	88
PID 2420 set thread context of 2596	2420	csrsll.exe	89

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2340-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2340-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2488-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2488-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2340-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2488-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023ca8-30.dat	upx
behavioral2/memory/2488-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2420-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2420-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2596-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2596-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2596-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2596-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2596-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2420-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2488-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4364-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2596-64-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe
Token: SeDebugPrivilege	4364	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
2420	csrsll.exe
4364	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2340 wrote to memory of 2488	2340	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	82
PID 2488 wrote to memory of 4788	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	83
PID 2488 wrote to memory of 4788	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	83
PID 2488 wrote to memory of 4788	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	83
PID 4788 wrote to memory of 2908	4788	cmd.exe	86
PID 4788 wrote to memory of 2908	4788	cmd.exe	86
PID 4788 wrote to memory of 2908	4788	cmd.exe	86
PID 2488 wrote to memory of 2420	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	87
PID 2488 wrote to memory of 2420	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	87
PID 2488 wrote to memory of 2420	2488	3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe	87
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 4364	2420	csrsll.exe	88
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89
PID 2420 wrote to memory of 2596	2420	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
"C:\Users\Admin\AppData\Local\Temp\3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe
  "C:\Users\Admin\AppData\Local\Temp\3f9f9f4e956f672a247e3aebcec6a41bccdaa7d1dbb58d7d2ed11626699ae003.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VUQRE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4788
  - - 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:2908
- - 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:2420
  - - 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:4364
  - - 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:2596

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\VUQRE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f996ac93f4eefed4c14530e53e65daed

SHA1
a45e45b757af7566bc265c4d34055076f93fbbec

SHA256
ad0a0a0dd2de7bb1855097ba42f51b0ac000ab973ba36d7e77d6b09e6bea9649

SHA512
f43ba4c530fbb327301117d760a19a1865cad6a0b786a4f2942de2de663bd8f7fb42d84f96701cb3440e9d713e0b51f3f3d119b2580227cabc102021446f4d1f

Download Submit
memory/2340-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2340-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/2340-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/2340-7-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/2340-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/2340-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2340-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2420-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2420-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2420-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2488-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2488-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2488-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2488-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2488-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2596-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4364-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads