1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165

Analysis

max time kernel
113s
max time network
143s
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, 01:52

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General

Target
1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe
Size 322KB
Sample221101-cafheafaf6
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4120	oobeldr.exe
2736	oobeldr.exe
3660	oobeldr.exe
800	oobeldr.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 4120 set thread context of 2736	4120	oobeldr.exe	93
PID 3660 set thread context of 800	3660	oobeldr.exe	97

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
1040	schtasks.exe
2356	schtasks.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 2796 wrote to memory of 4952	2796	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	82
PID 4952 wrote to memory of 1040	4952	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	86
PID 4952 wrote to memory of 1040	4952	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	86
PID 4952 wrote to memory of 1040	4952	1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe	86
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 4120 wrote to memory of 2736	4120	oobeldr.exe	93
PID 2736 wrote to memory of 2356	2736	oobeldr.exe	94
PID 2736 wrote to memory of 2356	2736	oobeldr.exe	94
PID 2736 wrote to memory of 2356	2736	oobeldr.exe	94
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97
PID 3660 wrote to memory of 800	3660	oobeldr.exe	97

C:\Users\Admin\AppData\Local\Temp\1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe
"C:\Users\Admin\AppData\Local\Temp\1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe
  C:\Users\Admin\AppData\Local\Temp\1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4952
- - 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:1040

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:4120
- 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:2736
- - 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:2356

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:3660
- C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
  2⤵
  - Executes dropped EXE
  PID:800

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

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Downloads

oobeldr.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\oobeldr.exe.log
Size 789B
SHA256 745ab70552d9a0463b791fd8dc1942838ac3e34fb1a68f09ed3766c7e3b05631
MD5 03d2df1e8834bc4ec1756735429b458c
SHA1 4ee6c0f5b04c8e0c5076219c5724032daab11d40
SHA512 2482c3d4478125ccbc7f224f50e86b7bf925ed438b59f4dce57b9b6bcdb59df51417049096b131b6b911173550eed98bc92aba7050861de303a692f0681b197b
MD5 SHA1 SHA512

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oobeldr.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Size 322KB
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

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oobeldr.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Size 322KB
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

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oobeldr.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Size 322KB
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

Submit Download

oobeldr.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Size 322KB
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

Submit Download

oobeldr.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Size 322KB
SHA256 1b8e42e9469d77d93e19d9f8338fc919ea8813b594226b1ba3a9dbfbfc545165
MD5 2019b36d9be4326a75c943905c7ed81a
SHA1 ed5d5953f85d9585ce7883f7a1ad839c43b2315c
SHA512 58e89e953458596fc475bccdb1fe8808ff91675bc5fa5ad44e5cb1439ed4a99d6c3a4c9a122602abe8d8113c71714bd320ff9588efd6e793885aea1b76690074
SSDEEP 6144:eKlzr1sYCzek2ciDaP9Xk6Ln1W8W/9InBSkZZmLdGcAdgdY6RKpjS:eGhQ2ciDq9ZL1W8q9InBRqELdolRKpj
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2796-132-0x0000000000930000-0x0000000000986000-memory.dmp

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memory/2796-136-0x0000000005460000-0x000000000547E000-memory.dmp

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memory/2796-135-0x0000000007C30000-0x0000000007CA6000-memory.dmp

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memory/2796-134-0x0000000007990000-0x0000000007A22000-memory.dmp

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memory/2796-133-0x0000000007EA0000-0x0000000008444000-memory.dmp

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memory/4952-142-0x0000000000400000-0x0000000000406000-memory.dmp

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memory/4952-140-0x0000000000400000-0x0000000000406000-memory.dmp

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memory/4952-138-0x0000000000400000-0x0000000000406000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads