cc9257055e40934bd5b28a845060374ef52d5ed16d8c3c36e51a74cc3b1b979c

Analysis

max time kernel
104s
max time network
141s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
17/05/2023, 06:13

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General

Target

file.exe
Size

1.2MB
MD5

47680487f473d32f043584495b841618
SHA1

eed46290d6d5951bbfedfc836a86db70310e1e0a
SHA256

cc9257055e40934bd5b28a845060374ef52d5ed16d8c3c36e51a74cc3b1b979c
SHA512

8db0507a565aa55c9f0f54506e93235e4daf171bdd55bc38baedde3520ec218ebbaa8eeb6c292d6ff36360636e02f0bda1674d43083a85b9410451fc40f1e4bb
SSDEEP

24576:MnX7X7EKuJ1LOgT3p/xbH25z00QZdX8dZ4gemlS0dvsEniGPT8F+IEoN:MnLYKu/Og7DbH2O0QZdMv4B0dvsEzPTM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1716	BYSYM.exe

Loads dropped DLL 1 IoCs

pid	Process
1524	cmd.exe

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

System Information Discovery
T1082

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

T1053

pid	Process
1208	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1660	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1124	powershell.exe
1672	powershell.exe
2020	powershell.exe
468	powershell.exe
1716	BYSYM.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	file.exe
Token: SeDebugPrivilege	1124	powershell.exe
Token: SeDebugPrivilege	1672	powershell.exe
Token: SeDebugPrivilege	1716	BYSYM.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	468	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 1672	1064	file.exe	28
PID 1064 wrote to memory of 1672	1064	file.exe	28
PID 1064 wrote to memory of 1672	1064	file.exe	28
PID 1064 wrote to memory of 1124	1064	file.exe	31
PID 1064 wrote to memory of 1124	1064	file.exe	31
PID 1064 wrote to memory of 1124	1064	file.exe	31
PID 1064 wrote to memory of 1524	1064	file.exe	32
PID 1064 wrote to memory of 1524	1064	file.exe	32
PID 1064 wrote to memory of 1524	1064	file.exe	32
PID 1524 wrote to memory of 1660	1524	cmd.exe	34
PID 1524 wrote to memory of 1660	1524	cmd.exe	34
PID 1524 wrote to memory of 1660	1524	cmd.exe	34
PID 1524 wrote to memory of 1716	1524	cmd.exe	35
PID 1524 wrote to memory of 1716	1524	cmd.exe	35
PID 1524 wrote to memory of 1716	1524	cmd.exe	35
PID 1716 wrote to memory of 2020	1716	BYSYM.exe	36
PID 1716 wrote to memory of 2020	1716	BYSYM.exe	36
PID 1716 wrote to memory of 2020	1716	BYSYM.exe	36
PID 1716 wrote to memory of 468	1716	BYSYM.exe	38
PID 1716 wrote to memory of 468	1716	BYSYM.exe	38
PID 1716 wrote to memory of 468	1716	BYSYM.exe	38
PID 1716 wrote to memory of 1708	1716	BYSYM.exe	40
PID 1716 wrote to memory of 1708	1716	BYSYM.exe	40
PID 1716 wrote to memory of 1708	1716	BYSYM.exe	40
PID 1708 wrote to memory of 1208	1708	cmd.exe	42
PID 1708 wrote to memory of 1208	1708	cmd.exe	42
PID 1708 wrote to memory of 1208	1708	cmd.exe	42

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\ProgramData'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1124
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5B79.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1660
- - C:\ProgramData\Forms\BYSYM.exe
    "C:\ProgramData\Forms\BYSYM.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\ProgramData'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2020
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:468
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "BYSYM" /tr "C:\ProgramData\Forms\BYSYM.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1708
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "BYSYM" /tr "C:\ProgramData\Forms\BYSYM.exe"
        5⤵
        Creates scheduled task(s)
        
        PID:1208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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:\ProgramData\Forms\BYSYM.exe

Filesize
598.6MB

MD5
e9468d419ce07bc8a56733c77a53b360

SHA1
b41459d5e1d75580799526154cb18c1cb1aaf4d4

SHA256
3f59d1ab3832278cc0e9018da32cac62b1bacc0a0ab3098a1fb3925eda112a05

SHA512
f369ea629701a330409a7e02f1a4fd1bddb915bc9d305ee9a39b792548c4ed4aae0440639298ef88e7d325ca8c3b795443ad37f9ed48d575ccdd9435889bcdfb

Download Submit
C:\ProgramData\Forms\BYSYM.exe

Filesize
602.6MB

MD5
32e6c4d254af9c1eed9c86ef720edfc3

SHA1
8d6a0fe6d7da23a73139a788bd60a460b08e69ff

SHA256
9c496d1570fe0d74754311f66e57814cb83237e8f1a5f78df31b41e0ffe10587

SHA512
f801a7e569a3b8d26a31bee601b2776876c49cfd2027b9c98d9ecb8b1059e720b3519386bc5e67a5e7d7ae84d08e9982052b612f99af19c5477bb960b6c4fe6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5B79.tmp.bat

Filesize
139B

MD5
5fa3d2f518ef984105ba7efc6eac6f63

SHA1
dbefe1e8e153d85cc042940d54b8db873c9e7985

SHA256
e7b163346a54c760e2bcba98382539c49a0f75e9856dfbc6b831e7f997aedbad

SHA512
1332906b653b2a60b2ecacbeaf0e6ec4bb2495a65ff72b3c152badc617d00950afec6f3f3e2aaa3ff199390f9438c56bd664d32aba408af6f36e7781e0ed0148

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5B79.tmp.bat

Filesize
139B

MD5
5fa3d2f518ef984105ba7efc6eac6f63

SHA1
dbefe1e8e153d85cc042940d54b8db873c9e7985

SHA256
e7b163346a54c760e2bcba98382539c49a0f75e9856dfbc6b831e7f997aedbad

SHA512
1332906b653b2a60b2ecacbeaf0e6ec4bb2495a65ff72b3c152badc617d00950afec6f3f3e2aaa3ff199390f9438c56bd664d32aba408af6f36e7781e0ed0148

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
68bad6b3c03679b7c07b099264921bcc

SHA1
55dc9c62e0f0b02d583ba0e52dc8a6e95b38f804

SHA256
15b1add34783eaf3a80709172fdf981d33c50f467321cdcfdcff547fb10eec1e

SHA512
c40b34644a097ce57065585bbc612f8aaa06875775b142db69b97e2ca34630a2f025e5f0a4dbbd6d81d8b4347feed6000b2190fc5ced07cf553c8cb65f28fa80

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
68bad6b3c03679b7c07b099264921bcc

SHA1
55dc9c62e0f0b02d583ba0e52dc8a6e95b38f804

SHA256
15b1add34783eaf3a80709172fdf981d33c50f467321cdcfdcff547fb10eec1e

SHA512
c40b34644a097ce57065585bbc612f8aaa06875775b142db69b97e2ca34630a2f025e5f0a4dbbd6d81d8b4347feed6000b2190fc5ced07cf553c8cb65f28fa80

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
68bad6b3c03679b7c07b099264921bcc

SHA1
55dc9c62e0f0b02d583ba0e52dc8a6e95b38f804

SHA256
15b1add34783eaf3a80709172fdf981d33c50f467321cdcfdcff547fb10eec1e

SHA512
c40b34644a097ce57065585bbc612f8aaa06875775b142db69b97e2ca34630a2f025e5f0a4dbbd6d81d8b4347feed6000b2190fc5ced07cf553c8cb65f28fa80

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\GMLXOB5TMO0FQ07N7YGL.temp

Filesize
7KB

MD5
68bad6b3c03679b7c07b099264921bcc

SHA1
55dc9c62e0f0b02d583ba0e52dc8a6e95b38f804

SHA256
15b1add34783eaf3a80709172fdf981d33c50f467321cdcfdcff547fb10eec1e

SHA512
c40b34644a097ce57065585bbc612f8aaa06875775b142db69b97e2ca34630a2f025e5f0a4dbbd6d81d8b4347feed6000b2190fc5ced07cf553c8cb65f28fa80

Download Submit
\ProgramData\Forms\BYSYM.exe

Filesize
628.5MB

MD5
dfe007efb486e5b11d1272ef24de3b54

SHA1
b93299eaf561ebab4701c875ba214172401037db

SHA256
0cd2c12ea9d1145a55e5c97489a315b442e6a96be57987b425cba4910ce6f0a5

SHA512
6f07ded31817a19c30224aa20d066d55054f06f32f45e4eedea98a8ba3359aee0200b789d7993a209e3272a2b573ffeea4a92a7cc9539b5ac3396dc5e1c6276a

Download Submit
memory/468-105-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/468-102-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/468-101-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/468-99-0x000000001B1D0000-0x000000001B4B2000-memory.dmp

Filesize
2.9MB

Download
memory/468-109-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/1064-72-0x000000001B000000-0x000000001B080000-memory.dmp

Filesize
512KB

Download
memory/1064-54-0x0000000000110000-0x0000000000240000-memory.dmp

Filesize
1.2MB

Download
memory/1064-55-0x000000001B000000-0x000000001B080000-memory.dmp

Filesize
512KB

Download
memory/1124-71-0x000000000231B000-0x0000000002352000-memory.dmp

Filesize
220KB

Download
memory/1124-70-0x0000000002314000-0x0000000002317000-memory.dmp

Filesize
12KB

Download
memory/1124-67-0x00000000022D0000-0x00000000022D8000-memory.dmp

Filesize
32KB

Download
memory/1672-69-0x00000000027BB000-0x00000000027F2000-memory.dmp

Filesize
220KB

Download
memory/1672-68-0x00000000027B4000-0x00000000027B7000-memory.dmp

Filesize
12KB

Download
memory/1672-66-0x000000001B0D0000-0x000000001B3B2000-memory.dmp

Filesize
2.9MB

Download
memory/1716-89-0x000000001B1E0000-0x000000001B260000-memory.dmp

Filesize
512KB

Download
memory/1716-87-0x0000000001200000-0x0000000001330000-memory.dmp

Filesize
1.2MB

Download
memory/1716-110-0x000000001B1E0000-0x000000001B260000-memory.dmp

Filesize
512KB

Download
memory/2020-100-0x00000000022F0000-0x00000000022F8000-memory.dmp

Filesize
32KB

Download
memory/2020-103-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/2020-104-0x0000000002840000-0x00000000028C0000-memory.dmp

Filesize
512KB

Download
memory/2020-108-0x000000000284B000-0x0000000002882000-memory.dmp

Filesize
220KB

Download