modiloader | 1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 23:41

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General

Target

1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
Size

90KB
MD5

7cca5c42300bb7ae0bdc7c8afcad3485
SHA1

ddb9d96c67639283c6b286f96b52f84c030661e0
SHA256

1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35
SHA512

ae924737df9d07feb874f4838e472a16e56a8afd11ac25fa0bcfb1010f283d13f0da5b3fd234fdffd78447d09456c2381f7b89042ce5418d517cd27810f7439f
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDx:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3v

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/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe

Executes dropped EXE 3 IoCs

pid	Process
728	csrsll.exe
116	csrsll.exe
3384	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-1-5-21-2045521122-590294423-3465680274-1000\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 3028 set thread context of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 728 set thread context of 116	728	csrsll.exe	101
PID 728 set thread context of 3384	728	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3028-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3028-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/556-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/556-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/556-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3028-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b84-28.dat	upx
behavioral2/memory/556-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/728-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/728-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3384-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/728-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3384-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/556-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/116-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3384-61-0x0000000000400000-0x0000000000414000-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	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.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

description	pid	Process
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe
Token: SeDebugPrivilege	116	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
728	csrsll.exe
116	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 3028 wrote to memory of 556	3028	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	88
PID 556 wrote to memory of 3580	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	91
PID 556 wrote to memory of 3580	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	91
PID 556 wrote to memory of 3580	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	91
PID 3580 wrote to memory of 1952	3580	cmd.exe	95
PID 3580 wrote to memory of 1952	3580	cmd.exe	95
PID 3580 wrote to memory of 1952	3580	cmd.exe	95
PID 556 wrote to memory of 728	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	96
PID 556 wrote to memory of 728	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	96
PID 556 wrote to memory of 728	556	1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe	96
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 116	728	csrsll.exe	101
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102
PID 728 wrote to memory of 3384	728	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
"C:\Users\Admin\AppData\Local\Temp\1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe
  "C:\Users\Admin\AppData\Local\Temp\1842a4d5ec3122ede1b7c4f6c9f62859024a72c3b03ffc750c1af164b3c53e35.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:556
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OCFBQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3580
  - - 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:1952
- - 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:728
  - - 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:116
  - - 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:3384

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\OCFBQ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0f23606ab751b83e28543b3e4fb9f9fa

SHA1
d256c8981d80223dbefed78dc39c5553e736f04d

SHA256
3701d080da4e53171bb9f6bf4e5a479892d1305d01bdec5eae93663dfa6b5d38

SHA512
8bfff47416794b71d21e3d2ff2462ef2875b31f80a987fa7f545935ada2bc1bf078e058a81000910c733f97b1154cc1cef0bbc1b841898b630a67e5bacd0cb1c

Download Submit
memory/116-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/556-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/556-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/556-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/556-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/556-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/728-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/728-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/728-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3028-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3028-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/3028-5-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/3028-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3028-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3028-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3384-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads