modiloader | 4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591

Analysis

max time kernel
119s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 12:01

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General

Target

4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
Size

94KB
MD5

4cefdc9b66c1111d871565339dd0a40e
SHA1

b7accad6b62542bf278cb5e59c2ceacf49e53a6f
SHA256

4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591
SHA512

f36a7ba9dfb09793d718f0c1462a0a96c602f12f0896e055fac2a77ddfd2c7a13aa669f454f9af7bd6ddab55f4b976304ab367a7ca2306964785477181152e1b
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/E:/pdyLALwACPmV3NYaYLiwIt3raA5BRfl

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/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-60-0x0000000000400000-0x0000000000414000-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	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe

Executes dropped EXE 3 IoCs

pid	Process
4500	csrsll.exe
1188	csrsll.exe
2168	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 4376 set thread context of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4500 set thread context of 1188	4500	csrsll.exe	88
PID 4500 set thread context of 2168	4500	csrsll.exe	89

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1200-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1200-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1200-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4376-10-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/files/0x000c000000023b63-27.dat	upx
behavioral2/memory/4500-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4500-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/2168-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1200-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2168-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2168-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4500-52-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1200-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2168-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1188-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2168-60-0x0000000000400000-0x0000000000414000-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	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.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	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe
Token: SeDebugPrivilege	1188	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
4500	csrsll.exe
1188	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 4376 wrote to memory of 1200	4376	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 1200 wrote to memory of 4616	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 1200 wrote to memory of 4616	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 1200 wrote to memory of 4616	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 4616 wrote to memory of 4024	4616	cmd.exe	86
PID 4616 wrote to memory of 4024	4616	cmd.exe	86
PID 4616 wrote to memory of 4024	4616	cmd.exe	86
PID 1200 wrote to memory of 4500	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 1200 wrote to memory of 4500	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 1200 wrote to memory of 4500	1200	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 1188	4500	csrsll.exe	88
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89
PID 4500 wrote to memory of 2168	4500	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
"C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
  "C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VHFJX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4616
  - - 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:4024
- - 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:4500
  - - 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:1188
  - - 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:2168

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\VHFJX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
63527c8012cf70b07e7d9a3b0ecd1a9b

SHA1
36127f79727695fe10561a38cf4bb2c0dd247f7f

SHA256
ce880a355719d35f1924330a7103cb2c5fe7beca76b7811623d7aff08dc6bfd3

SHA512
44a22c02a1ac6dc5b522e8c9173a7fdd7827b2729ea3480423f84d640c759318c8f80d6f15d190bcd6cf06ae6b167e1acb3296c46c232627f868bac2d5053a8b

Download Submit
memory/1188-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1200-55-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2168-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4376-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4376-10-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4376-4-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/4376-3-0x0000000002300000-0x0000000002301000-memory.dmp

Filesize
4KB

Download
memory/4500-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4500-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4500-52-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads