modiloader | 1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912

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
01/12/2024, 22:10

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General

Target

1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
Size

90KB
MD5

6c9edf4ef86739c3ffa917a861cf6dcb
SHA1

6392dbc07f5a6d422cbca431dffe39b89b28f9aa
SHA256

1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912
SHA512

f3e60615290495eedf983a82f5e006783981228b04dac4b6493ad2b94475dceb51930b60b6848a0932acbca1b85a66b099c27d20db96820fe081c6cf17cc93e8
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDj:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3h

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/3980-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3980-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3980-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3980-63-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe

Executes dropped EXE 3 IoCs

pid	Process
3884	csrsll.exe
1876	csrsll.exe
3980	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-1-5-21-493223053-2004649691-1575712786-1000\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 412 set thread context of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 3884 set thread context of 1876	3884	csrsll.exe	98
PID 3884 set thread context of 3980	3884	csrsll.exe	99

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/412-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/412-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4984-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4984-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4984-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/412-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b7c-29.dat	upx
behavioral2/memory/4984-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3884-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3884-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3980-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3980-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3980-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3980-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3980-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3884-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4984-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1876-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3980-63-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
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	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe
Token: SeDebugPrivilege	1876	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
3884	csrsll.exe
1876	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 412 wrote to memory of 4984	412	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	89
PID 4984 wrote to memory of 2468	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	93
PID 4984 wrote to memory of 2468	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	93
PID 4984 wrote to memory of 2468	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	93
PID 2468 wrote to memory of 3660	2468	cmd.exe	96
PID 2468 wrote to memory of 3660	2468	cmd.exe	96
PID 2468 wrote to memory of 3660	2468	cmd.exe	96
PID 4984 wrote to memory of 3884	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	97
PID 4984 wrote to memory of 3884	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	97
PID 4984 wrote to memory of 3884	4984	1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe	97
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 1876	3884	csrsll.exe	98
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99
PID 3884 wrote to memory of 3980	3884	csrsll.exe	99

C:\Users\Admin\AppData\Local\Temp\1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
"C:\Users\Admin\AppData\Local\Temp\1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:412
- C:\Users\Admin\AppData\Local\Temp\1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe
  "C:\Users\Admin\AppData\Local\Temp\1f2853bfe42010331e924cefe073df4a1e0d01bff3a6aab54c3f36de698dc912.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4984
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PURFR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2468
  - - 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:3660
- - 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:3884
  - - 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:1876
  - - 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:3980

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\PURFR.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3814cc4d2586903dd59fb010a2e17777

SHA1
f02cdcb18ce46c9dcc2199ea88e79b29dc989e1e

SHA256
444728097d5fe09f490fe5ac3c1e2fe7971426ffd5c43c420021bd61901a0cf2

SHA512
40814190749d1f436ced035f89d878be1a969411d50c2ac2906a740f470006eebbc33b05534fba2a318c48d6332b652606f5fefd1b06d8883b9f2b6283098291

Download Submit
memory/412-3-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/412-4-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/412-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/412-6-0x0000000002200000-0x0000000002202000-memory.dmp

Filesize
8KB

Download
memory/412-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/412-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1876-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3884-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3884-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3884-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3980-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3980-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3980-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3980-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3980-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4984-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4984-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4984-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4984-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4984-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4984-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads