c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b

General

Target

c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe
Size

105KB
MD5

65d9c9a18d96d8c9da65a37b4c2a5572
SHA1

42660dc87fd5fa12aa452a4c5cd7fd3fa20628c3
SHA256

c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b
SHA512

0f845a701c29f33a83715ebfb60e5f6b881a9a1bfe00016ac4df667f425baf88ee547cb7a87e212e13490dd07566f4d20432109599cc04c4dc27c0c0b55f6928
SSDEEP

3072:pxIWTjOKItEKn/tenU6suHaqwbmrFf5j:pL3FI6+1enU6su6Jbmj

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
808	Flash Player.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4680	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2595e4cf2fd0c40e069caaf5bbe27c3a.exe	Flash Player.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2595e4cf2fd0c40e069caaf5bbe27c3a.exe	Flash Player.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2595e4cf2fd0c40e069caaf5bbe27c3a = "\"C:\\Users\\Admin\\AppData\\Roaming\\Flash Player.exe\" .."	Flash Player.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\2595e4cf2fd0c40e069caaf5bbe27c3a = "\"C:\\Users\\Admin\\AppData\\Roaming\\Flash Player.exe\" .."	Flash Player.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
3792	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe
808	Flash Player.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3792	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe
Token: SeDebugPrivilege	808	Flash Player.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3792 wrote to memory of 808	3792	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe	80
PID 3792 wrote to memory of 808	3792	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe	80
PID 3792 wrote to memory of 808	3792	c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe	80
PID 808 wrote to memory of 4680	808	Flash Player.exe	81
PID 808 wrote to memory of 4680	808	Flash Player.exe	81
PID 808 wrote to memory of 4680	808	Flash Player.exe	81

C:\Users\Admin\AppData\Local\Temp\c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe
"C:\Users\Admin\AppData\Local\Temp\c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3792
- C:\Users\Admin\AppData\Roaming\Flash Player.exe
  "C:\Users\Admin\AppData\Roaming\Flash Player.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Flash Player.exe" "Flash Player.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4680

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Flash Player.exe

Filesize
105KB

MD5
65d9c9a18d96d8c9da65a37b4c2a5572

SHA1
42660dc87fd5fa12aa452a4c5cd7fd3fa20628c3

SHA256
c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b

SHA512
0f845a701c29f33a83715ebfb60e5f6b881a9a1bfe00016ac4df667f425baf88ee547cb7a87e212e13490dd07566f4d20432109599cc04c4dc27c0c0b55f6928

Download Submit
C:\Users\Admin\AppData\Roaming\Flash Player.exe

Filesize
105KB

MD5
65d9c9a18d96d8c9da65a37b4c2a5572

SHA1
42660dc87fd5fa12aa452a4c5cd7fd3fa20628c3

SHA256
c1d37d63b2ae9e5a813e29391119b32a5a96010f4de04f736e849515258e0e8b

SHA512
0f845a701c29f33a83715ebfb60e5f6b881a9a1bfe00016ac4df667f425baf88ee547cb7a87e212e13490dd07566f4d20432109599cc04c4dc27c0c0b55f6928

Download Submit
memory/808-137-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/808-140-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/3792-132-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/3792-133-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download
memory/3792-138-0x0000000075010000-0x00000000755C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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