cobaltstrike | c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf

General

Target

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
Size

307KB
MD5

7dffc7e2a8fc9d7240006bf7a98abde8
SHA1

0f77a9b9c4435d7a255cef7294832786d605da4a
SHA256

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf
SHA512

265fbdb016929b03a2f441717fde7ded7c42ffb65dfa69b59223b87c2d054812f405fb8c1757d055576040089ebebed638577692c842f7de4a9cdbd3f96f6e26
SSDEEP

6144:2qzwT72Y0SqzinYKTY1SQshfRPVQe1MZkIYSccr7wbstOIPECYeixlYGic9i:2C87SSFYsY1UMqMZJYSN7wbstOI8fveT

Score

10^/10

cobaltstrike backdoor persistence trojan

Malware Config

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike
Executes dropped EXE 1 IoCs

Processes:

tayq.exe

pid process

984 tayq.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1868 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

pid process

1292 c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

pid	process
1868	cmd.exe

pid	process
1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tayq.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\Currentversion\Run	tayq.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\{CB118568-7F59-AD4D-CD9C-5E5DE9C17D40} = "C:\\Users\\Admin\\AppData\\Roaming\\Pugua\\tayq.exe"	tayq.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

description	pid	process	target process
PID 1292 set thread context of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Privacy	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

tayq.exe

pid	process
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe
984	tayq.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exetayq.exe

description	pid	process	target process
PID 1292 wrote to memory of 984	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	tayq.exe
PID 1292 wrote to memory of 984	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	tayq.exe
PID 1292 wrote to memory of 984	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	tayq.exe
PID 1292 wrote to memory of 984	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	tayq.exe
PID 984 wrote to memory of 1112	984	tayq.exe	taskhost.exe
PID 984 wrote to memory of 1112	984	tayq.exe	taskhost.exe
PID 984 wrote to memory of 1112	984	tayq.exe	taskhost.exe
PID 984 wrote to memory of 1112	984	tayq.exe	taskhost.exe
PID 984 wrote to memory of 1112	984	tayq.exe	taskhost.exe
PID 984 wrote to memory of 1176	984	tayq.exe	Dwm.exe
PID 984 wrote to memory of 1176	984	tayq.exe	Dwm.exe
PID 984 wrote to memory of 1176	984	tayq.exe	Dwm.exe
PID 984 wrote to memory of 1176	984	tayq.exe	Dwm.exe
PID 984 wrote to memory of 1176	984	tayq.exe	Dwm.exe
PID 984 wrote to memory of 1200	984	tayq.exe	Explorer.EXE
PID 984 wrote to memory of 1200	984	tayq.exe	Explorer.EXE
PID 984 wrote to memory of 1200	984	tayq.exe	Explorer.EXE
PID 984 wrote to memory of 1200	984	tayq.exe	Explorer.EXE
PID 984 wrote to memory of 1200	984	tayq.exe	Explorer.EXE
PID 984 wrote to memory of 1292	984	tayq.exe	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
PID 984 wrote to memory of 1292	984	tayq.exe	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
PID 984 wrote to memory of 1292	984	tayq.exe	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
PID 984 wrote to memory of 1292	984	tayq.exe	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
PID 984 wrote to memory of 1292	984	tayq.exe	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe
PID 1292 wrote to memory of 1868	1292	c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1200

C:\Users\Admin\AppData\Local\Temp\c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe
"C:\Users\Admin\AppData\Local\Temp\c31026364ef46dfb5ace4f4a0ac73e8b9f874dc517e3d052f3155d497c96d9bf.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1292

C:\Users\Admin\AppData\Roaming\Pugua\tayq.exe
"C:\Users\Admin\AppData\Roaming\Pugua\tayq.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:984

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp73d4cce4.bat"
3⤵
- Deletes itself
PID:1868

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1176

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1112

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp73d4cce4.bat
Filesize
307B

MD5
9e7789767a952d179cee81ea585a9e93

SHA1
631e1ab2aed07c80e6040887da12c6038d4d2401

SHA256
73803ef8d81db3a368e01a697b448de76530829379e8fba6f77ba0ebe1116c01

SHA512
fcb26918d3675339fd1cfd1fe0c76d3c6839752272adb7701daa8fa946b2237b37fde97038ebcf13b340a295e9cb7d4a8d7d5823320b2a9cb486cc4fffb1af58

Download Submit
C:\Users\Admin\AppData\Roaming\Pugua\tayq.exe
Filesize
307KB

MD5
1dd663158f509d698aaa366e4be2d2d2

SHA1
e6c156214635818a23e11edace86fe57a7acb8a0

SHA256
6c3cba03b91115e0e6b81cc084b170490ad8ada0337e847480c2455075f6c03d

SHA512
7cbb7804e3ae126eacc72ff651c81829d94f8dc910b0c19312104e6d6840596fcdb9761076d3c76836803cfbdfb852e523a4a82c687f55065c8c70640f71816b

Download Submit
C:\Users\Admin\AppData\Roaming\Pugua\tayq.exe
Filesize
307KB

MD5
1dd663158f509d698aaa366e4be2d2d2

SHA1
e6c156214635818a23e11edace86fe57a7acb8a0

SHA256
6c3cba03b91115e0e6b81cc084b170490ad8ada0337e847480c2455075f6c03d

SHA512
7cbb7804e3ae126eacc72ff651c81829d94f8dc910b0c19312104e6d6840596fcdb9761076d3c76836803cfbdfb852e523a4a82c687f55065c8c70640f71816b

Download Submit
\Users\Admin\AppData\Roaming\Pugua\tayq.exe
Filesize
307KB

MD5
1dd663158f509d698aaa366e4be2d2d2

SHA1
e6c156214635818a23e11edace86fe57a7acb8a0

SHA256
6c3cba03b91115e0e6b81cc084b170490ad8ada0337e847480c2455075f6c03d

SHA512
7cbb7804e3ae126eacc72ff651c81829d94f8dc910b0c19312104e6d6840596fcdb9761076d3c76836803cfbdfb852e523a4a82c687f55065c8c70640f71816b

Download Submit
memory/984-63-0x0000000000C00000-0x0000000000C50000-memory.dmp

Filesize
320KB

Download
memory/984-106-0x0000000000C00000-0x0000000000C50000-memory.dmp

Filesize
320KB

Download
memory/984-105-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/984-104-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/984-59-0x0000000000000000-mapping.dmp

Download
memory/1112-68-0x0000000001D30000-0x0000000001D74000-memory.dmp

Filesize
272KB

Download
memory/1112-66-0x0000000001D30000-0x0000000001D74000-memory.dmp

Filesize
272KB

Download
memory/1112-69-0x0000000001D30000-0x0000000001D74000-memory.dmp

Filesize
272KB

Download
memory/1112-70-0x0000000001D30000-0x0000000001D74000-memory.dmp

Filesize
272KB

Download
memory/1112-71-0x0000000001D30000-0x0000000001D74000-memory.dmp

Filesize
272KB

Download
memory/1176-77-0x0000000001C60000-0x0000000001CA4000-memory.dmp

Filesize
272KB

Download
memory/1176-76-0x0000000001C60000-0x0000000001CA4000-memory.dmp

Filesize
272KB

Download
memory/1176-74-0x0000000001C60000-0x0000000001CA4000-memory.dmp

Filesize
272KB

Download
memory/1176-75-0x0000000001C60000-0x0000000001CA4000-memory.dmp

Filesize
272KB

Download
memory/1200-80-0x0000000002AD0000-0x0000000002B14000-memory.dmp

Filesize
272KB

Download
memory/1200-83-0x0000000002AD0000-0x0000000002B14000-memory.dmp

Filesize
272KB

Download
memory/1200-81-0x0000000002AD0000-0x0000000002B14000-memory.dmp

Filesize
272KB

Download
memory/1200-82-0x0000000002AD0000-0x0000000002B14000-memory.dmp

Filesize
272KB

Download
memory/1292-99-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1292-61-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1292-87-0x00000000003D0000-0x0000000000414000-memory.dmp

Filesize
272KB

Download
memory/1292-88-0x00000000003D0000-0x0000000000414000-memory.dmp

Filesize
272KB

Download
memory/1292-86-0x00000000003D0000-0x0000000000414000-memory.dmp

Filesize
272KB

Download
memory/1292-54-0x0000000000170000-0x00000000001C0000-memory.dmp

Filesize
320KB

Download
memory/1292-55-0x00000000762E1000-0x00000000762E3000-memory.dmp

Filesize
8KB

Download
memory/1292-56-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1292-57-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1292-89-0x00000000003D0000-0x0000000000414000-memory.dmp

Filesize
272KB

Download
memory/1292-98-0x0000000000170000-0x00000000001C0000-memory.dmp

Filesize
320KB

Download
memory/1292-100-0x00000000003D0000-0x0000000000414000-memory.dmp

Filesize
272KB

Download
memory/1292-62-0x00000000003D0000-0x0000000000420000-memory.dmp

Filesize
320KB

Download
memory/1868-94-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1868-97-0x00000000000671E6-mapping.dmp

Download
memory/1868-103-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1868-95-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1868-96-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1868-92-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads