b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2023 08:30

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General

Target

b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe
Size

199KB
MD5

8be096396730e81a6470d8109434484f
SHA1

7dc4accca98049649f0f4dcea4633c66fdf1cae7
SHA256

b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771
SHA512

5222871e62d1600938ddc6e3e59f7d70819ce7ee3047a506e963934e4b38a2331ee78a8bad9d35f347596ed1225a6a5f2a888ce04adb33b0843ae39824b44bda
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCO4:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXR

Score

7^/10

Malware Config

Signatures

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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe

Executes dropped EXE 1 IoCs

pid	Process
4528	eiyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\eiyhost.exe	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe
File opened for modification	C:\Windows\Debug\eiyhost.exe	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	eiyhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	eiyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2632	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 4444	2632	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe	84
PID 2632 wrote to memory of 4444	2632	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe	84
PID 2632 wrote to memory of 4444	2632	b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe	84

C:\Users\Admin\AppData\Local\Temp\b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe
"C:\Users\Admin\AppData\Local\Temp\b851e7dbe0692e80955f40b7bf2bf76725df711f73a5385d7f54aab57611c771.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B851E7~1.EXE > nul
  2⤵
  PID:4444

C:\Windows\Debug\eiyhost.exe
C:\Windows\Debug\eiyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:4528

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\eiyhost.exe

Filesize
199KB

MD5
198c5210115f035584ed8025c658fec4

SHA1
da4d10ca4cbeb8beee59908ae2b851de20db9520

SHA256
a8d47c4972c5bbc3ecab83c3c3406e865c8d1edd09b03843abde175952aeafe4

SHA512
49986c7b1e734fcf67010b1c6309b81f942a0e4a9e28c3a6d499b6c1690af377e5fb0be3dee68c7063bda2181494dd86d132fad72363b4615afc5dd8914362bd

Download Submit
C:\Windows\debug\eiyhost.exe

Filesize
199KB

MD5
198c5210115f035584ed8025c658fec4

SHA1
da4d10ca4cbeb8beee59908ae2b851de20db9520

SHA256
a8d47c4972c5bbc3ecab83c3c3406e865c8d1edd09b03843abde175952aeafe4

SHA512
49986c7b1e734fcf67010b1c6309b81f942a0e4a9e28c3a6d499b6c1690af377e5fb0be3dee68c7063bda2181494dd86d132fad72363b4615afc5dd8914362bd

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads