modiloader | f2863bf26d5a3f934d4e3018a62e8bc3159e35799b1a61ffa8509219f23493c4

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14/08/2024, 04:19

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General

Target

161b9c56dd8fe3729a08f1e7a2beafd0N.exe
Size

90KB
MD5

161b9c56dd8fe3729a08f1e7a2beafd0
SHA1

c43328639017df819f1f31497d9d32645c93d57b
SHA256

f2863bf26d5a3f934d4e3018a62e8bc3159e35799b1a61ffa8509219f23493c4
SHA512

708059d40150841bccbadd0eaf865a0947b1ba9d711d4cec9a84b6f6f4582db93a2c80d1c4a417e3607abdcba109942f7938acf880962893661617fdabaef163
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4660-48-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-59-0x0000000000400000-0x0000000000414000-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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	161b9c56dd8fe3729a08f1e7a2beafd0N.exe

Executes dropped EXE 3 IoCs

pid	Process
4260	csrsll.exe
1712	csrsll.exe
4660	csrsll.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3084-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4204-3-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4204-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4204-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3084-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x00080000000234e8-26.dat	upx
behavioral2/memory/4260-34-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4260-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4660-40-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4660-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1712-52-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4660-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4260-50-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4660-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4204-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1712-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4660-59-0x0000000000400000-0x0000000000414000-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-1-5-21-1302416131-1437503476-2806442725-1000\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 3084 set thread context of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 4260 set thread context of 1712	4260	csrsll.exe	100
PID 4260 set thread context of 4660	4260	csrsll.exe	101

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	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	161b9c56dd8fe3729a08f1e7a2beafd0N.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	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe
Token: SeDebugPrivilege	1712	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
4260	csrsll.exe
1712	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 3084 wrote to memory of 4204	3084	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	92
PID 4204 wrote to memory of 1296	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	93
PID 4204 wrote to memory of 1296	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	93
PID 4204 wrote to memory of 1296	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	93
PID 1296 wrote to memory of 1724	1296	cmd.exe	97
PID 1296 wrote to memory of 1724	1296	cmd.exe	97
PID 1296 wrote to memory of 1724	1296	cmd.exe	97
PID 4204 wrote to memory of 4260	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	98
PID 4204 wrote to memory of 4260	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	98
PID 4204 wrote to memory of 4260	4204	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	98
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 1712	4260	csrsll.exe	100
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101
PID 4260 wrote to memory of 4660	4260	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe
"C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3084
- C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe
  "C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4204
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QYMOA.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1296
  - - 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:1724
- - 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:4260
  - - 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:1712
  - - 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:4660

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\QYMOA.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
717d1cd406d8a692111be7d15940ef21

SHA1
c24cfec8a105231a11c44caf89a4e2829a4131cb

SHA256
4a5fcb661a35ff48413517eea87bc0f14b50c65a4dbc23712953c5f756958d47

SHA512
063045edff241e78776ea17e7a00da90ee6eb837887175a0035515447a1a00da5ef37a77f6857a832686c54589341dea51cbd117556532d1dee081b2bc0ed625

Download Submit
memory/1712-52-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1712-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3084-7-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/3084-8-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3084-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3084-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4204-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4204-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4204-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4204-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4260-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4260-50-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4260-34-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4660-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-40-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads