modiloader | b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a

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
05-12-2024 08:58

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General

Target

b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
Size

90KB
MD5

5061ecba83d8ce860b6dee96ca0b02ac
SHA1

a955caf1b307e542b264d5a15da10402883c3a44
SHA256

b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a
SHA512

a45a6ff6b0dea8b167c4cb9b644cef1f1b94e58308980cd4f607173961b578f936bd1dfc028e02ed44ecd99cbcc6bc28a8979b6d8ae09fad01a8c9ebbeab25bd
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDB:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3z

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/2088-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2088-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2088-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2088-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe

Executes dropped EXE 3 IoCs

pid	Process
2244	csrsll.exe
4468	csrsll.exe
2088	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-1-5-21-3756129449-3121373848-4276368241-1000\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 3204 set thread context of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 2244 set thread context of 4468	2244	csrsll.exe	95
PID 2244 set thread context of 2088	2244	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3204-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3204-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/448-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/448-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3204-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/448-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb0-29.dat	upx
behavioral2/memory/448-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2244-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2244-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2088-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2088-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2088-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2088-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2088-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2244-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/448-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4468-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2088-61-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe
Token: SeDebugPrivilege	4468	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
2244	csrsll.exe
4468	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 3204 wrote to memory of 448	3204	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	86
PID 448 wrote to memory of 1492	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	87
PID 448 wrote to memory of 1492	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	87
PID 448 wrote to memory of 1492	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	87
PID 1492 wrote to memory of 1356	1492	cmd.exe	90
PID 1492 wrote to memory of 1356	1492	cmd.exe	90
PID 1492 wrote to memory of 1356	1492	cmd.exe	90
PID 448 wrote to memory of 2244	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	91
PID 448 wrote to memory of 2244	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	91
PID 448 wrote to memory of 2244	448	b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe	91
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 4468	2244	csrsll.exe	95
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96
PID 2244 wrote to memory of 2088	2244	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
"C:\Users\Admin\AppData\Local\Temp\b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe
  "C:\Users\Admin\AppData\Local\Temp\b28e4ae754cfb5e86fac81a62847478845fabd7aae1bc3ba894bf3191c90bd9a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:448
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BPXPC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1492
  - - 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:2244
  - - 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:4468
  - - 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:2088

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\BPXPC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
48c27d3323acd129e4345eff1c873366

SHA1
1dabb40f9d308ee0d178e939aba1abc2d302ff98

SHA256
604425440e8d6b1018ca574b91481012c33d1127adc87fe8298d3e2b0586a63d

SHA512
46c5358f0c3ca8a355cec191ed9ce8ca1f9d4fec7c34c0af7ba13db7280b5836bf4ea8fd16c90d39fb2726b0aec5a396932a750c4a25fd33a34c8cd0ed863e1b

Download Submit
memory/448-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/448-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/448-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/448-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/448-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2088-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2244-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2244-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2244-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3204-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3204-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3204-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/4468-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads