699ebcd7261ee4d77703e40c5516f33e1a1df5d55b211c864abb86b74b52ad95

Analysis

max time kernel
52s
max time network
51s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 22:19

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General

Target

krnl.exe
Size

2.2MB
MD5

3eb033ab0d3a63fd07abcf676c9ae3fb
SHA1

d42329938146081e43bf4105f30475c888df744f
SHA256

7d8f888fa63661fad1bbc57f7e88b4f7c50e65b70502d56d36c4b5d2c9effc63
SHA512

2b0e23893a88de7a1c35d43ee0ab264cad351d1b12fcff56beae7efd0636332ea7fa891e1965ed191bcd32bb614ec9742658812ea0d53ee2df4591236941d255
SSDEEP

49152:Q3nWGu3gXNoFbvNOL1b/HmDeH31vAN3/bk3gk:QXWGzovOl/HmiH31vAN0

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	krnl.exe

Executes dropped EXE 1 IoCs

pid	Process
2892	krnl.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
632	2892	WerFault.exe	86

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings	krnl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1580	krnl.exe
Token: SeDebugPrivilege	2892	krnl.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2892	1580	krnl.exe	86
PID 1580 wrote to memory of 2892	1580	krnl.exe	86
PID 1580 wrote to memory of 2892	1580	krnl.exe	86

C:\Users\Admin\AppData\Local\Temp\krnl.exe
"C:\Users\Admin\AppData\Local\Temp\krnl.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\Desktop\krnl\krnl.exe
  "C:\Users\Admin\Desktop\krnl\krnl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 1172
    3⤵
    - Program crash
    PID:632

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2892 -ip 2892
1⤵
PID:3828

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

Replay Monitor

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Downloads

C:\Users\Admin\Desktop\krnl\krnl.exe

Filesize
2.2MB

MD5
3eb033ab0d3a63fd07abcf676c9ae3fb

SHA1
d42329938146081e43bf4105f30475c888df744f

SHA256
7d8f888fa63661fad1bbc57f7e88b4f7c50e65b70502d56d36c4b5d2c9effc63

SHA512
2b0e23893a88de7a1c35d43ee0ab264cad351d1b12fcff56beae7efd0636332ea7fa891e1965ed191bcd32bb614ec9742658812ea0d53ee2df4591236941d255

Download Submit
C:\Users\Admin\Desktop\krnl\wctEED4.tmp

Filesize
63KB

MD5
e516a60bc980095e8d156b1a99ab5eee

SHA1
238e243ffc12d4e012fd020c9822703109b987f6

SHA256
543796a1b343b4ebc0285d89cb8eb70667ac7b513da37495e38003704e9d88d7

SHA512
9b51e99ba20e9da56d1acc24a1cf9f9c9dbdeb742bec034e0ff2bc179a60f4aff249f40344f9ddd43229dcdefa1041940f65afb336d46c175ffeff725c638d58

Download Submit
memory/1580-6-0x00000000054F0000-0x000000000550E000-memory.dmp

Filesize
120KB

Download
memory/1580-3-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/1580-4-0x00000000055F0000-0x0000000005666000-memory.dmp

Filesize
472KB

Download
memory/1580-5-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/1580-0-0x000000007532E000-0x000000007532F000-memory.dmp

Filesize
4KB

Download
memory/1580-2-0x0000000005B00000-0x00000000060A4000-memory.dmp

Filesize
5.6MB

Download
memory/1580-1-0x00000000008E0000-0x0000000000B22000-memory.dmp

Filesize
2.3MB

Download
memory/1580-64-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-63-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-65-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-66-0x0000000075320000-0x0000000075AD0000-memory.dmp

Filesize
7.7MB

Download