b9fd23efb7ba41c3d2b8d7047a74cf9f94899f77cd3cbae124b4d0e0b93ada4e

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 23:12

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General

Target

b9fd23efb7ba41c3d2b8d7047a74cf9f94899f77cd3cbae124b4d0e0b93ada4e.xls
Size

95KB
MD5

b7c8f4b666da9232b8a1af602f8eab37
SHA1

b57ce08cbefcb92abd6017a661c93605fa49e0be
SHA256

b9fd23efb7ba41c3d2b8d7047a74cf9f94899f77cd3cbae124b4d0e0b93ada4e
SHA512

a74382c93fbc9ec0e2d59618363d5eb244815b18fd8bd4ca068df6da703238d736d3d99a26277fd5215b14028907bed3a3eb58dbec309b8ccafc541b0a07c4c0
SSDEEP

1536:iFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgBHuS4hcTO97v7UYdEJmAq:cKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg+

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://atperson.com/campusvirtual/3aAaeSKPaURF/

xlm40.dropper

https://buffetmazzi.com.br/ckfinder/i/

xlm40.dropper

http://atici.net/c/MgEC/

xlm40.dropper

http://www.birebiregitim.net/wp-includes/f/

Signatures

Process spawned unexpected child process 4 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1252	2596	regsvr32.exe	29
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2996	2596	regsvr32.exe	29
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2992	2596	regsvr32.exe	29
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1248	2596	regsvr32.exe	29

System Location Discovery: System Language Discovery 1 TTPs 5 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

Processes:

regsvr32.exeregsvr32.exeEXCEL.EXEregsvr32.exeregsvr32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid	Process
2596	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid	Process
2596	EXCEL.EXE
2596	EXCEL.EXE
2596	EXCEL.EXE

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

EXCEL.EXE

description	pid	Process	procid_target
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 1252	2596	EXCEL.EXE	31
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2996	2596	EXCEL.EXE	32
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 2992	2596	EXCEL.EXE	33
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34
PID 2596 wrote to memory of 1248	2596	EXCEL.EXE	34

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\b9fd23efb7ba41c3d2b8d7047a74cf9f94899f77cd3cbae124b4d0e0b93ada4e.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:1252
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2996
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2992
- C:\Windows\SysWOW64\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:1248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\CabB712.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB735.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2596-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2596-1-0x0000000072B7D000-0x0000000072B88000-memory.dmp

Filesize
44KB

Download
memory/2596-124-0x0000000072B7D000-0x0000000072B88000-memory.dmp

Filesize
44KB

Download