b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

Analysis

max time kernel
105s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-11-2022 16:15

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General

Target

b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe
Size

325KB
MD5

ca6bbbfccb97dc915539f7dd6a495769
SHA1

0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3
SHA256

b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7
SHA512

06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84
SSDEEP

6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
3632	oobeldr.exe
3176	oobeldr.exe
2632	oobeldr.exe
1940	oobeldr.exe
3012	oobeldr.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4912 set thread context of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 3632 set thread context of 2632	3632	oobeldr.exe	94
PID 1940 set thread context of 3012	1940	oobeldr.exe	98

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1872	schtasks.exe
4288	schtasks.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 4912 wrote to memory of 2320	4912	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	81
PID 2320 wrote to memory of 4288	2320	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	82
PID 2320 wrote to memory of 4288	2320	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	82
PID 2320 wrote to memory of 4288	2320	b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe	82
PID 3632 wrote to memory of 3176	3632	oobeldr.exe	91
PID 3632 wrote to memory of 3176	3632	oobeldr.exe	91
PID 3632 wrote to memory of 3176	3632	oobeldr.exe	91
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 3632 wrote to memory of 2632	3632	oobeldr.exe	94
PID 2632 wrote to memory of 1872	2632	oobeldr.exe	95
PID 2632 wrote to memory of 1872	2632	oobeldr.exe	95
PID 2632 wrote to memory of 1872	2632	oobeldr.exe	95
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98
PID 1940 wrote to memory of 3012	1940	oobeldr.exe	98

C:\Users\Admin\AppData\Local\Temp\b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe
"C:\Users\Admin\AppData\Local\Temp\b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe
  C:\Users\Admin\AppData\Local\Temp\b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
    3⤵
    - Creates scheduled task(s)
    PID:4288

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3632
- C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  2⤵
  - Executes dropped EXE
  PID:3176
- C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
    3⤵
    - Creates scheduled task(s)
    PID:1872

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  2⤵
  - Executes dropped EXE
  PID:3012

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\oobeldr.exe.log

Filesize
789B

MD5
03d2df1e8834bc4ec1756735429b458c

SHA1
4ee6c0f5b04c8e0c5076219c5724032daab11d40

SHA256
745ab70552d9a0463b791fd8dc1942838ac3e34fb1a68f09ed3766c7e3b05631

SHA512
2482c3d4478125ccbc7f224f50e86b7bf925ed438b59f4dce57b9b6bcdb59df51417049096b131b6b911173550eed98bc92aba7050861de303a692f0681b197b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Filesize
325KB

MD5
ca6bbbfccb97dc915539f7dd6a495769

SHA1
0c43f5c4caf6c36e8a69c916f61dcd762fb1ecb3

SHA256
b3a5fcef9505c18f84da2c6cc7cf38ef15f9c7e1cce3e83578d8d8532448ccd7

SHA512
06934e73e3e7c0f9f9b5764e11c307dd954c22426abc9f1a0118cb3c75e3e5aded97afe5f8199fce41cb1ced3d414058d3dfd03c1242dd33facb3dcf624dac84

Download Submit
memory/2320-142-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2320-140-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2320-138-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4912-136-0x00000000075D0000-0x00000000075EE000-memory.dmp

Filesize
120KB

Download
memory/4912-132-0x0000000000640000-0x0000000000696000-memory.dmp

Filesize
344KB

Download
memory/4912-135-0x0000000007910000-0x0000000007986000-memory.dmp

Filesize
472KB

Download
memory/4912-134-0x00000000075F0000-0x0000000007682000-memory.dmp

Filesize
584KB

Download
memory/4912-133-0x0000000007AC0000-0x0000000008064000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads