a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

General

Target

a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe
Size

304KB
MD5

acb2f5473f654943028daa2cb70f2279
SHA1

855e5b67e643a813eeb228a66bf9a3360de3d6fa
SHA256

a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6
SHA512

bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24
SSDEEP

6144:CYKCCetytoYsAitDdqeF8Y/6r/fQLAcPuaB2tRmippZ9IWSU+lb2vNqd:CfCCRy7Aqdq7Y/IqP72vrppZavCvN

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2016	ognkmb.exe

Deletes itself 1 IoCs

pid	Process
1160	cmd.exe

Loads dropped DLL 3 IoCs

pid	Process
1160	cmd.exe
1160	cmd.exe
2016	ognkmb.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1760	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1560	PING.EXE

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	taskkill.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe
2016	ognkmb.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 1160	752	a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe	28
PID 752 wrote to memory of 1160	752	a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe	28
PID 752 wrote to memory of 1160	752	a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe	28
PID 752 wrote to memory of 1160	752	a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe	28
PID 1160 wrote to memory of 1760	1160	cmd.exe	30
PID 1160 wrote to memory of 1760	1160	cmd.exe	30
PID 1160 wrote to memory of 1760	1160	cmd.exe	30
PID 1160 wrote to memory of 1760	1160	cmd.exe	30
PID 1160 wrote to memory of 1560	1160	cmd.exe	32
PID 1160 wrote to memory of 1560	1160	cmd.exe	32
PID 1160 wrote to memory of 1560	1160	cmd.exe	32
PID 1160 wrote to memory of 1560	1160	cmd.exe	32
PID 1160 wrote to memory of 2016	1160	cmd.exe	33
PID 1160 wrote to memory of 2016	1160	cmd.exe	33
PID 1160 wrote to memory of 2016	1160	cmd.exe	33
PID 1160 wrote to memory of 2016	1160	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe
"C:\Users\Admin\AppData\Local\Temp\a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 752 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6.exe" & start C:\Users\Admin\AppData\Local\ognkmb.exe -f
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 752
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1760
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:1560
- - C:\Users\Admin\AppData\Local\ognkmb.exe
    C:\Users\Admin\AppData\Local\ognkmb.exe -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:2016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\ognkmb.exe

Filesize
304KB

MD5
acb2f5473f654943028daa2cb70f2279

SHA1
855e5b67e643a813eeb228a66bf9a3360de3d6fa

SHA256
a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

SHA512
bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24

Download Submit
C:\Users\Admin\AppData\Local\ognkmb.exe

Filesize
304KB

MD5
acb2f5473f654943028daa2cb70f2279

SHA1
855e5b67e643a813eeb228a66bf9a3360de3d6fa

SHA256
a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

SHA512
bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24

Download Submit
\Users\Admin\AppData\Local\ognkmb.exe

Filesize
304KB

MD5
acb2f5473f654943028daa2cb70f2279

SHA1
855e5b67e643a813eeb228a66bf9a3360de3d6fa

SHA256
a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

SHA512
bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24

Download Submit
\Users\Admin\AppData\Local\ognkmb.exe

Filesize
304KB

MD5
acb2f5473f654943028daa2cb70f2279

SHA1
855e5b67e643a813eeb228a66bf9a3360de3d6fa

SHA256
a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

SHA512
bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24

Download Submit
\Users\Admin\AppData\Local\ognkmb.exe

Filesize
304KB

MD5
acb2f5473f654943028daa2cb70f2279

SHA1
855e5b67e643a813eeb228a66bf9a3360de3d6fa

SHA256
a2617523c418a3a6e6ea6eaec02c16d3d8ca2daf4b1f2c0dcb673580e54e64e6

SHA512
bda4bc1d14e9225cdd846a251e8c286a3d5ed557926e335cea0495c1fb13b57581c8a3dccc83e2f22b1253c9b01cdf006ce8123118395d4877a93bad454d4b24

Download Submit
memory/752-55-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

Download
memory/752-56-0x0000000001000000-0x00000000010A6000-memory.dmp

Filesize
664KB

Download
memory/752-58-0x0000000001000000-0x00000000010A6000-memory.dmp

Filesize
664KB

Download
memory/752-54-0x0000000001000000-0x00000000010A6000-memory.dmp

Filesize
664KB

Download
memory/2016-69-0x0000000001000000-0x00000000010A6000-memory.dmp

Filesize
664KB

Download
memory/2016-70-0x0000000001000000-0x00000000010A6000-memory.dmp

Filesize
664KB

Download

Analysis

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