modiloader | 2bc3a5c8ffac6d474614ea8d26bf05a75041f37f5f64d0f15d50fbfffb9bdd1d

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16-09-2024 23:33

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General

Target

Trojan.Win32.Darkeye.exe
Size

90KB
MD5

0b9fcdfae895dc7fd8b98e830a9c9530
SHA1

ec52b7e5306bd7c7cfb13b18165748d7cb395885
SHA256

2bc3a5c8ffac6d474614ea8d26bf05a75041f37f5f64d0f15d50fbfffb9bdd1d
SHA512

2753c5a5b46c8a5024d1994ff210c40a11f9a81d1b219fe3e551f558ad31350e3205bf068f0ad72f22493a2ceafa617204939500b513d8ea7b5de52a3fe395ab
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/3864-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3864-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3864-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3864-64-0x0000000000400000-0x0000000000414000-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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	Trojan.Win32.Darkeye.exe

Executes dropped EXE 3 IoCs

pid	Process
2616	csrsll.exe
848	csrsll.exe
3864	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1072-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1072-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/684-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/684-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1072-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/684-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023503-29.dat	upx
behavioral2/memory/2616-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/684-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2616-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2616-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3864-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3864-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2616-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3864-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/684-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/848-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3864-64-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-4182098368-2521458979-3782681353-1000\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 1072 set thread context of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 2616 set thread context of 848	2616	csrsll.exe	95
PID 2616 set thread context of 3864	2616	csrsll.exe	96

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	Trojan.Win32.Darkeye.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Trojan.Win32.Darkeye.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	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe
Token: SeDebugPrivilege	848	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1072	Trojan.Win32.Darkeye.exe
684	Trojan.Win32.Darkeye.exe
2616	csrsll.exe
848	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 1072 wrote to memory of 684	1072	Trojan.Win32.Darkeye.exe	87
PID 684 wrote to memory of 4744	684	Trojan.Win32.Darkeye.exe	90
PID 684 wrote to memory of 4744	684	Trojan.Win32.Darkeye.exe	90
PID 684 wrote to memory of 4744	684	Trojan.Win32.Darkeye.exe	90
PID 4744 wrote to memory of 2524	4744	cmd.exe	93
PID 4744 wrote to memory of 2524	4744	cmd.exe	93
PID 4744 wrote to memory of 2524	4744	cmd.exe	93
PID 684 wrote to memory of 2616	684	Trojan.Win32.Darkeye.exe	94
PID 684 wrote to memory of 2616	684	Trojan.Win32.Darkeye.exe	94
PID 684 wrote to memory of 2616	684	Trojan.Win32.Darkeye.exe	94
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 848	2616	csrsll.exe	95
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96
PID 2616 wrote to memory of 3864	2616	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1072
- C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe
  "C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:684
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BYGUT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4744
  - - 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:2524
- - 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:2616
  - - 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:848
  - - 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:3864

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\BYGUT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
38e87bd3ac963b53d729d2e42a25175f

SHA1
53ebd426ac7969c3caafc6f4b5861e680dbc6be6

SHA256
201b4af9ee65d6fa8d0db4f9aab1632f98415fa6040103f3e7ca4e7d94eb3110

SHA512
b351c098826ff3d7fba66651369f071a6e50cd28611844cc2e26a2513bf7a0a68ab4864c5a6d1ff1e6b40eea1dd380a134c08dd726ebb27c7721e3f8f205596a

Download Submit
memory/684-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/684-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/684-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/684-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/684-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/684-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/848-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1072-5-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1072-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1072-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1072-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1072-3-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/1072-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2616-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2616-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2616-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2616-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3864-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads