modiloader | 6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf

Analysis

max time kernel
149s
max time network
150s
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 23:14

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General

Target

6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
Size

90KB
MD5

994f4a53acdfed902d68d0cac11d25bb
SHA1

79bb67133de3f2e6721b4e1111bf36c6eba403e4
SHA256

6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf
SHA512

985e51b51c51e68d8f76bfbccde6fbd8a6ed30cfca909faa8712a57e6f38505a3c2b5ff34f0b48f4f75a67e4e585d438ee3ace4fff6bb875d526534e658abf18
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDQ: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/2792-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe

Executes dropped EXE 3 IoCs

pid	Process
1380	csrsll.exe
2188	csrsll.exe
2792	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-1-5-21-4089630652-1596403869-279772308-1000\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 2384 set thread context of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 1380 set thread context of 2188	1380	csrsll.exe	92
PID 1380 set thread context of 2792	1380	csrsll.exe	93

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2384-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2384-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2680-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2680-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2680-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2384-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0033000000023b75-29.dat	upx
behavioral2/memory/2680-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1380-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1380-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2792-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2680-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2792-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1380-50-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2188-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2792-62-0x0000000000400000-0x0000000000414000-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	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	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.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	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
1380	csrsll.exe
2188	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2384 wrote to memory of 2680	2384	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	82
PID 2680 wrote to memory of 2312	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	83
PID 2680 wrote to memory of 2312	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	83
PID 2680 wrote to memory of 2312	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	83
PID 2312 wrote to memory of 3412	2312	cmd.exe	86
PID 2312 wrote to memory of 3412	2312	cmd.exe	86
PID 2312 wrote to memory of 3412	2312	cmd.exe	86
PID 2680 wrote to memory of 1380	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	87
PID 2680 wrote to memory of 1380	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	87
PID 2680 wrote to memory of 1380	2680	6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe	87
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2188	1380	csrsll.exe	92
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93
PID 1380 wrote to memory of 2792	1380	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
"C:\Users\Admin\AppData\Local\Temp\6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe
  "C:\Users\Admin\AppData\Local\Temp\6669e3fe4d4ed0ec43f93af7388e81efdf417c90b975c5c73bba84e4c4084dcf.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BQROX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2312
  - - 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:3412
- - 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:1380
  - - 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:2188
  - - 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:2792

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\BQROX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
4310062a453aa4ae47ae4f8d8a83d027

SHA1
f461eea31ea4da00829677aa82cc14b3d8f0f443

SHA256
ef4b61ff328f43a54d96ab21a8bae7f0b6af48f3928595c37d297d2511b8ff20

SHA512
047f4ec638f3cb594d55384fbf6dc5067cacdac7d492deeb6e31af280bc96bf9d4e2b800b4d90a41bf5911424a1b9f85f0292443af84628051588a1c0bf88c61

Download Submit
memory/1380-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1380-50-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1380-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2188-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2384-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/2384-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2384-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2384-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2384-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2384-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2680-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2680-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2680-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2680-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2680-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2792-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads