d8597c5d4661eb00555da3acb472af112f3e640657a38ae49d8567f3b95d9c7c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 10:23

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General

Target

a.exe
Size

54KB
MD5

a362175bc3e9d2814bfd0d8f2a72c3aa
SHA1

f7a55e1c3a6122b8734a287867b77dc2955f5695
SHA256

d8597c5d4661eb00555da3acb472af112f3e640657a38ae49d8567f3b95d9c7c
SHA512

dd44dd7064ae0a78a4be169d2c10afb8504251ee1425ca3a41740162c3e29ab606f2832abab6cc11e9559c63d3c11d931c94888ea393c92b7466b38cbeda65d3
SSDEEP

1536:lsvUQEx3YyZa2XaosJpZeQZD/NPGbNSOL:lgULYX2XW3gQh4bNfL

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\system core	a.exe
File opened for modification	C:\Windows\SysWOW64\system core\a.exe	a.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4496	schtasks.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
2208	tasklist.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4260	a.exe
Token: SeDebugPrivilege	2208	tasklist.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 4496	4260	a.exe	95
PID 4260 wrote to memory of 4496	4260	a.exe	95
PID 4260 wrote to memory of 4496	4260	a.exe	95
PID 4260 wrote to memory of 4660	4260	a.exe	99
PID 4260 wrote to memory of 4660	4260	a.exe	99
PID 4260 wrote to memory of 4660	4260	a.exe	99
PID 4660 wrote to memory of 1716	4660	cmd.exe	101
PID 4660 wrote to memory of 1716	4660	cmd.exe	101
PID 4660 wrote to memory of 1716	4660	cmd.exe	101
PID 4260 wrote to memory of 3480	4260	a.exe	102
PID 4260 wrote to memory of 3480	4260	a.exe	102
PID 4260 wrote to memory of 3480	4260	a.exe	102
PID 3480 wrote to memory of 4432	3480	cmd.exe	104
PID 3480 wrote to memory of 4432	3480	cmd.exe	104
PID 3480 wrote to memory of 4432	3480	cmd.exe	104
PID 4260 wrote to memory of 3288	4260	a.exe	105
PID 4260 wrote to memory of 3288	4260	a.exe	105
PID 4260 wrote to memory of 3288	4260	a.exe	105
PID 3288 wrote to memory of 2208	3288	cmd.exe	107
PID 3288 wrote to memory of 2208	3288	cmd.exe	107
PID 3288 wrote to memory of 2208	3288	cmd.exe	107
PID 3288 wrote to memory of 2620	3288	cmd.exe	108
PID 3288 wrote to memory of 2620	3288	cmd.exe	108
PID 3288 wrote to memory of 2620	3288	cmd.exe	108
PID 3288 wrote to memory of 2536	3288	cmd.exe	109
PID 3288 wrote to memory of 2536	3288	cmd.exe	109
PID 3288 wrote to memory of 2536	3288	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\a.exe
"C:\Users\Admin\AppData\Local\Temp\a.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /Create /TN "Steam" /XML "C:\Users\Admin\AppData\Local\Temp\tmp469E.tmp" /F
  2⤵
  - Creates scheduled task(s)
  PID:4496
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\DriverDesc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\SysWOW64\reg.exe
    REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\DriverDesc
    3⤵
    PID:1716
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\ProviderName
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Windows\SysWOW64\reg.exe
    REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\ProviderName
    3⤵
    PID:4432
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c TASKLIST /FI "STATUS eq RUNNING" | find /V "Image Name" | find /V "="
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3288
- - C:\Windows\SysWOW64\tasklist.exe
    TASKLIST /FI "STATUS eq RUNNING"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2208
- - C:\Windows\SysWOW64\find.exe
    find /V "Image Name"
    3⤵
    PID:2620
- - C:\Windows\SysWOW64\find.exe
    find /V "="
    3⤵
    PID:2536

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp469E.tmp

Filesize
1KB

MD5
3c2bd0bfa8854c70e70ab4e657adfb79

SHA1
77ae58a6b479308d631df6fef5f3100dedf3c36a

SHA256
57a50372f67d4b8d1aed68e9bb30946c36ab2aa6dd56c6d3ed2d8d877c7fe858

SHA512
dcaec3c80cff1e73cd523cc14ab117366f3649ed0a0b7548c90c962da6262137f41971bd3d858f47d0114ee9be46db14d6dec83aa426d9b2efc8b6ca9c9d1a4d

Download Submit
memory/4260-0-0x0000000000540000-0x0000000000554000-memory.dmp

Filesize
80KB

Download
memory/4260-1-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download
memory/4260-2-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4260-5-0x0000000005950000-0x00000000059B6000-memory.dmp

Filesize
408KB

Download
memory/4260-7-0x0000000074400000-0x0000000074BB0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads