modiloader | 4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87

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
23-11-2024 22:15

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General

Target

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
Size

90KB
MD5

db47c34ceb951ecf71e8354cc0ba1de6
SHA1

94aa90d998aad7c71191b8cb7a408f08a7c71a5d
SHA256

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87
SHA512

9647ecaa928465e3a0b13b5875132ca56ee701a7234ea22161f7f47157e3f5a1e482e390c4900fb98063c4e0012827387cbf3d67a53997ba88f3c81cd2cce441
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/880-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/880-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/880-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/880-63-0x0000000000400000-0x0000000000414000-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:

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
1748	csrsll.exe
1684	csrsll.exe
880	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.execsrsll.exe

description	pid	Process	procid_target
PID 5040 set thread context of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 1748 set thread context of 1684	1748	csrsll.exe	102
PID 1748 set thread context of 880	1748	csrsll.exe	103

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/5040-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5040-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2828-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2828-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5040-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2828-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-30.dat	upx
behavioral2/memory/1748-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2828-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1748-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1748-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/880-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/880-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/880-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/880-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/880-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1748-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2828-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1684-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/880-63-0x0000000000400000-0x0000000000414000-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:

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.execmd.exereg.execsrsll.execsrsll.execsrsll.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe
Token: SeDebugPrivilege	1684	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.execsrsll.execsrsll.exe

pid	Process
5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
1748	csrsll.exe
1684	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 5040 wrote to memory of 2828	5040	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	91
PID 2828 wrote to memory of 4864	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	92
PID 2828 wrote to memory of 4864	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	92
PID 2828 wrote to memory of 4864	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	92
PID 4864 wrote to memory of 1460	4864	cmd.exe	96
PID 4864 wrote to memory of 1460	4864	cmd.exe	96
PID 4864 wrote to memory of 1460	4864	cmd.exe	96
PID 2828 wrote to memory of 1748	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	97
PID 2828 wrote to memory of 1748	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	97
PID 2828 wrote to memory of 1748	2828	4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe	97
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 1684	1748	csrsll.exe	102
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103
PID 1748 wrote to memory of 880	1748	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
"C:\Users\Admin\AppData\Local\Temp\4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Users\Admin\AppData\Local\Temp\4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe
  "C:\Users\Admin\AppData\Local\Temp\4e4c400e6ef2dd3c91b76dd6f59bdb8b188fb303b739cd28c64faf6880f72a87.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\HNSEC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4864
  - - 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:1460
- - 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:1748
  - - 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:1684
  - - 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:880

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\HNSEC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
306f239e544fa30d6de83257bdf2eb38

SHA1
c829b18caa45b9010a19c9606fd8ddd588a577ab

SHA256
1cf175ac75452944141de59baa084dd90c15d9f8edd142b0856a3e95c5423170

SHA512
460bb0dad45733b140dc121dbb2ab0fc482956668dca4d7c2f0b2de24fbe85785e93fb394fdca363345d1585ef93014bf3d0b31a48b02c4f0856d3e5f20aeafe

Download Submit
memory/880-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/880-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/880-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/880-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/880-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/880-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1684-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1748-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1748-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1748-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1748-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2828-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2828-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5040-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5040-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/5040-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5040-6-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/5040-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5040-7-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/5040-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download