a5643944606ce1fc7025ba988e0186ab8d37a44af5efd077a8934e36a41d8624

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10-06-2024 11:48

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General

Target

VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe
Size

376KB
MD5

9fb86c5050cc496dcdc3f53ee2c59069
SHA1

ee358c3adca4413b6c30b146a8b33b70a230b3c7
SHA256

a5643944606ce1fc7025ba988e0186ab8d37a44af5efd077a8934e36a41d8624
SHA512

ecc5f28fe85343e1574112323e2f35853b49290100d450e5a4ca708c16f07018b5ae82be70bb5408d0e92183344c12d3612a9198fa7c641f61f8a5f6c536f21d
SSDEEP

6144:Ee3rNhMeYq4CGRTs4kadSoKVStcmTVn57CpSCwsUbg62oXd:EY5hMfqwTsTKcmTV5kINEx+d

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2428	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2560	fnlkxsrkuqds.exe
840	fnlkxsrkuqds.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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\hhsrqjifpbot = "C:\\Windows\\system32\\cmd.exe /c start \"\" \"C:\\Windows\\fnlkxsrkuqds.exe\""	fnlkxsrkuqds.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2560 set thread context of 840	2560	fnlkxsrkuqds.exe	34

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\fnlkxsrkuqds.exe	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe
File opened for modification	C:\Windows\fnlkxsrkuqds.exe	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
840	fnlkxsrkuqds.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe
Token: SeDebugPrivilege	840	fnlkxsrkuqds.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2172 wrote to memory of 2760	2172	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	30
PID 2760 wrote to memory of 2560	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	31
PID 2760 wrote to memory of 2560	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	31
PID 2760 wrote to memory of 2560	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	31
PID 2760 wrote to memory of 2560	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	31
PID 2760 wrote to memory of 2428	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	32
PID 2760 wrote to memory of 2428	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	32
PID 2760 wrote to memory of 2428	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	32
PID 2760 wrote to memory of 2428	2760	VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe	32
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34
PID 2560 wrote to memory of 840	2560	fnlkxsrkuqds.exe	34

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	fnlkxsrkuqds.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	fnlkxsrkuqds.exe

C:\Users\Admin\AppData\Local\Temp\VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe
  "C:\Users\Admin\AppData\Local\Temp\VirusShare_9fb86c5050cc496dcdc3f53ee2c59069.exe"
  2⤵
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\fnlkxsrkuqds.exe
    C:\Windows\fnlkxsrkuqds.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2560
  - - C:\Windows\fnlkxsrkuqds.exe
      C:\Windows\fnlkxsrkuqds.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      System policy modification
      PID:840
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\VIRUSS~1.EXE
    3⤵
    - Deletes itself
    PID:2428

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\fnlkxsrkuqds.exe

Filesize
376KB

MD5
9fb86c5050cc496dcdc3f53ee2c59069

SHA1
ee358c3adca4413b6c30b146a8b33b70a230b3c7

SHA256
a5643944606ce1fc7025ba988e0186ab8d37a44af5efd077a8934e36a41d8624

SHA512
ecc5f28fe85343e1574112323e2f35853b49290100d450e5a4ca708c16f07018b5ae82be70bb5408d0e92183344c12d3612a9198fa7c641f61f8a5f6c536f21d

Download Submit
memory/840-52-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/840-50-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/840-51-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2172-0-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/2172-1-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/2172-18-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/2560-28-0x0000000000400000-0x00000000005EB000-memory.dmp

Filesize
1.9MB

Download
memory/2760-10-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-6-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-4-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-20-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-12-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2760-31-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-19-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-16-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2760-2-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download