modiloader | fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/09/2024, 11:16

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General

Target

fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
Size

326KB
MD5

95a635eb4778983d887ecea8b91ad42b
SHA1

ab59ca3497e2b37dbec7616af942a3e92189a5fb
SHA256

fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b
SHA512

94b09eb9c2677a35ce59dba0bd80c3a28a8fedbf8f79e0d7f505d4db73cd8d65a84f4c9a1be0a2e742ea018edca9250bc893b3c9f1acd83c8473251bc2dda072
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+O1sVG0/pZ6iPC8

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/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-60-0x0000000000400000-0x0000000000414000-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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe

Executes dropped EXE 3 IoCs

pid	Process
4520	csrsll.exe
1536	csrsll.exe
4824	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1952-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1952-5-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4104-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4104-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1952-11-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4104-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000800000002347f-28.dat	upx
behavioral2/memory/4520-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4104-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4520-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4520-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4824-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4520-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4104-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1536-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4824-60-0x0000000000400000-0x0000000000414000-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-1-5-21-656926755-4116854191-210765258-1000\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 1952 set thread context of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 4520 set thread context of 1536	4520	csrsll.exe	95
PID 4520 set thread context of 4824	4520	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe
Token: SeDebugPrivilege	1536	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
4520	csrsll.exe
1536	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 1952 wrote to memory of 4104	1952	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	87
PID 4104 wrote to memory of 4300	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	88
PID 4104 wrote to memory of 4300	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	88
PID 4104 wrote to memory of 4300	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	88
PID 4300 wrote to memory of 1608	4300	cmd.exe	91
PID 4300 wrote to memory of 1608	4300	cmd.exe	91
PID 4300 wrote to memory of 1608	4300	cmd.exe	91
PID 4104 wrote to memory of 4520	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	92
PID 4104 wrote to memory of 4520	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	92
PID 4104 wrote to memory of 4520	4104	fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe	92
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 1536	4520	csrsll.exe	95
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96
PID 4520 wrote to memory of 4824	4520	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
"C:\Users\Admin\AppData\Local\Temp\fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe
  "C:\Users\Admin\AppData\Local\Temp\fc9c9ea86620c692e2a80dfe25e672fa0ebdc09d6742afa052b043507c6d721b.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RONRE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4300
  - - 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:1608
- - 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:4520
  - - 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:1536
  - - 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:4824

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\RONRE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
5432cddef7cf91ab1fb560d8b722a91c

SHA1
55fcae7595e717639af0abbc1638d10a6146f303

SHA256
d4b8a991837c96862ddb88b5a242a58712c75b5dd531438242d5b28d429c5d9b

SHA512
9c189d9d7d2a287eadf3d377b15cdb9d156912b3a7297cf7f58c0df11eefce6d051127b4b924921dea8061b376df02913ef1b1a327c49225dc7130c571443261

Download Submit
memory/1536-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1952-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1952-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1952-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1952-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/1952-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1952-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4104-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4104-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4520-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4520-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4520-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4520-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4824-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads