modiloader | 095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451d

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 16:14

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General

Target

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
Size

90KB
MD5

3b433c5d82a1b789585d5d30d78e47c0
SHA1

af3c3a6b0f6c30640aab517bc76e7875ba9576f4
SHA256

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451d
SHA512

bcca892c5f34dd8c5e584e0597d507ac659231b89706bcc978f1941e90e5b0bd3b44bf6b5b636143e490136eb19347c5c6e27df49bbbbf3539cc4825607d3e19
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 family
modiloader

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4664-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4664-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4664-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4664-63-0x0000000000400000-0x0000000000414000-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

Processes:

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
2276	csrsll.exe
1472	csrsll.exe
4664	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.execsrsll.exe

description	pid	Process	procid_target
PID 1784 set thread context of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 2276 set thread context of 1472	2276	csrsll.exe	105
PID 2276 set thread context of 4664	2276	csrsll.exe	106

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1784-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1784-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4528-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4528-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4528-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1784-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000e000000023b53-28.dat	upx
behavioral2/memory/2276-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4528-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2276-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2276-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4664-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4664-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4664-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4664-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4664-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2276-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4528-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1472-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4664-63-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.execsrsll.execsrsll.exe095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.execmd.exereg.exe

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	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.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

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe
Token: SeDebugPrivilege	1472	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.execsrsll.execsrsll.exe

pid	Process
1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
2276	csrsll.exe
1472	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 1784 wrote to memory of 4528	1784	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	87
PID 4528 wrote to memory of 4932	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	90
PID 4528 wrote to memory of 4932	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	90
PID 4528 wrote to memory of 4932	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	90
PID 4932 wrote to memory of 1356	4932	cmd.exe	94
PID 4932 wrote to memory of 1356	4932	cmd.exe	94
PID 4932 wrote to memory of 1356	4932	cmd.exe	94
PID 4528 wrote to memory of 2276	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	95
PID 4528 wrote to memory of 2276	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	95
PID 4528 wrote to memory of 2276	4528	095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe	95
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 1472	2276	csrsll.exe	105
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106
PID 2276 wrote to memory of 4664	2276	csrsll.exe	106

C:\Users\Admin\AppData\Local\Temp\095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
"C:\Users\Admin\AppData\Local\Temp\095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Users\Admin\AppData\Local\Temp\095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe
  "C:\Users\Admin\AppData\Local\Temp\095cf7298ce1f8e4ecfded303920253714cb7293460d4194c6269dfa7099451dN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BFKSR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4932
  - - 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:1356
- - 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:2276
  - - 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:1472
  - - 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:4664

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\BFKSR.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e0c5ad80ddae4f89fc4d27c8ba07dfdd

SHA1
38374150840c2e5dd3db5412b4bd8c873b0d0d3c

SHA256
c7f38649742a8c522643d82b848e55c080668fe3bc2d5877b1ebfedce430e55a

SHA512
5df16693e1abe97a006e494735d97ec5a162615103a5780e3edec3d4e9fbbe37c14b4888a1c19e6de4689cc321f2d6de3ad1e2544ee48f0c8743ce6003ab8b4f

Download Submit
memory/1472-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1784-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1784-5-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/1784-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1784-6-0x0000000002430000-0x0000000002432000-memory.dmp

Filesize
8KB

Download
memory/1784-3-0x0000000002400000-0x0000000002402000-memory.dmp

Filesize
8KB

Download
memory/1784-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2276-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2276-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2276-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2276-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4528-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4528-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4528-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4528-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4528-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4528-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4664-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4664-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4664-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4664-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4664-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4664-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download