modiloader | 3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9

Analysis

max time kernel
120s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/01/2025, 02:07

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General

Target

3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
Size

90KB
MD5

abbf2a0e9f1a5bffe7931e5bd26dc490
SHA1

3f17b638d043411c9cd31a90de1571c3b592d436
SHA256

3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9
SHA512

dbf60fa7396521badb0f11332185b924b7c5d61935575293b6e39d829385d9daa7836863a3dcda72f5c5925730ac0463ea8f5a0ff3963a4ab079ad80f2c3e68b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDq:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE30

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/4856-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4856-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4856-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4856-61-0x0000000000400000-0x0000000000414000-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	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe

Executes dropped EXE 3 IoCs

pid	Process
1984	csrsll.exe
3704	csrsll.exe
4856	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 3420 set thread context of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 1984 set thread context of 3704	1984	csrsll.exe	101
PID 1984 set thread context of 4856	1984	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3420-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3420-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1548-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1548-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3420-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1548-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c7b-29.dat	upx
behavioral2/memory/1548-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1984-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1984-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4856-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4856-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4856-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4856-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4856-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1984-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1548-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3704-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4856-61-0x0000000000400000-0x0000000000414000-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	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe
Token: SeDebugPrivilege	3704	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
1984	csrsll.exe
3704	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 3420 wrote to memory of 1548	3420	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	84
PID 1548 wrote to memory of 1016	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	89
PID 1548 wrote to memory of 1016	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	89
PID 1548 wrote to memory of 1016	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	89
PID 1016 wrote to memory of 2928	1016	cmd.exe	93
PID 1016 wrote to memory of 2928	1016	cmd.exe	93
PID 1016 wrote to memory of 2928	1016	cmd.exe	93
PID 1548 wrote to memory of 1984	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	94
PID 1548 wrote to memory of 1984	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	94
PID 1548 wrote to memory of 1984	1548	3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe	94
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 3704	1984	csrsll.exe	101
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102
PID 1984 wrote to memory of 4856	1984	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
"C:\Users\Admin\AppData\Local\Temp\3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Users\Admin\AppData\Local\Temp\3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe
  "C:\Users\Admin\AppData\Local\Temp\3aac43e90cd3b284be1ee14fd576301fc20c234aa603ab1bec463b4f199267c9N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1548
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CDWUD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1016
  - - 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:2928
- - 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:1984
  - - 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:3704
  - - 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:4856

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\CDWUD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9bf506f4641ba55f37b072b02370f469

SHA1
ada0bfb3d97418ee4b802ef83fe1b02f6972717d

SHA256
63d4250d1812ae56fda1b641c8a7434beaf2e10fce6a59fe9cb1c97776be9644

SHA512
d0c47b4f59506ac9e2ed3d6e255f41ec6a19ecfc79c1d441c7ee05407f92ed0e38e02de3c7786eedc5cf5d3cf253390cc3f26e0e14419bbd6da7a6ade68ada09

Download Submit
memory/1548-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1548-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1548-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1548-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1548-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1984-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1984-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1984-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3420-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/3420-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/3420-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3420-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3420-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3420-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3704-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4856-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads