cobaltstrike | 73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658

General

Target

73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe
Size

143KB
MD5

0c864b8ebeb8ea6e1a99a1abc9b1213a
SHA1

808fa3c2afb67bd43400da4ed41c91d0fd6acecc
SHA256

73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658
SHA512

40cf66929c1eac3835519136295d564d279b81131a3892190b90c0254e15b5fedd09b0029aeabc93fe6149f3f1ac441873466d9bc44d620f40a49876b8aaeb6a
SSDEEP

1536:H++fq6M5b9NqTxV67wAInyAeG+90MHJaOsp1gMIEELZ2G6CNgRtOOOOOOOOEQ6Jm:H++VMoTxyi9e7O1IXLoSWRqcHfe

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:

CacheMgr.exe

pid process

1092 CacheMgr.exe
Loads dropped DLL 1 IoCs

Processes:

73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

pid process

832 73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

pid	process
1092	CacheMgr.exe

pid	process
832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\StubPath = "\"C:\\Users\\Admin\\AppData\\Roaming\\CacheMgr.exe\" -as"	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe

description	pid	process	target process
PID 832 wrote to memory of 484	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	cmd.exe
PID 832 wrote to memory of 484	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	cmd.exe
PID 832 wrote to memory of 484	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	cmd.exe
PID 832 wrote to memory of 484	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	cmd.exe
PID 832 wrote to memory of 1092	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	CacheMgr.exe
PID 832 wrote to memory of 1092	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	CacheMgr.exe
PID 832 wrote to memory of 1092	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	CacheMgr.exe
PID 832 wrote to memory of 1092	832	73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe	CacheMgr.exe

C:\Users\Admin\AppData\Local\Temp\73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe
"C:\Users\Admin\AppData\Local\Temp\73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:832

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c copy "C:\Users\Admin\AppData\Local\Temp\73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658.exe" "C:\Users\Admin\AppData\Roaming\CacheMgr.exe"
2⤵
PID:484

C:\Users\Admin\AppData\Roaming\CacheMgr.exe
"C:\Users\Admin\AppData\Roaming\CacheMgr.exe" -as
2⤵
- Executes dropped EXE
PID:1092

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

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\CacheMgr.exe
Filesize
143KB

MD5
0c864b8ebeb8ea6e1a99a1abc9b1213a

SHA1
808fa3c2afb67bd43400da4ed41c91d0fd6acecc

SHA256
73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658

SHA512
40cf66929c1eac3835519136295d564d279b81131a3892190b90c0254e15b5fedd09b0029aeabc93fe6149f3f1ac441873466d9bc44d620f40a49876b8aaeb6a

Download Submit
C:\Users\Admin\AppData\Roaming\CacheMgr.exe
Filesize
143KB

MD5
0c864b8ebeb8ea6e1a99a1abc9b1213a

SHA1
808fa3c2afb67bd43400da4ed41c91d0fd6acecc

SHA256
73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658

SHA512
40cf66929c1eac3835519136295d564d279b81131a3892190b90c0254e15b5fedd09b0029aeabc93fe6149f3f1ac441873466d9bc44d620f40a49876b8aaeb6a

Download Submit
\Users\Admin\AppData\Roaming\CacheMgr.exe
Filesize
143KB

MD5
0c864b8ebeb8ea6e1a99a1abc9b1213a

SHA1
808fa3c2afb67bd43400da4ed41c91d0fd6acecc

SHA256
73b8af0cae1078fbe0290cca6aa48e84289e0038e7eb92bd4bd41295f9fb7658

SHA512
40cf66929c1eac3835519136295d564d279b81131a3892190b90c0254e15b5fedd09b0029aeabc93fe6149f3f1ac441873466d9bc44d620f40a49876b8aaeb6a

Download Submit
memory/484-59-0x0000000000000000-mapping.dmp

Download
memory/832-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/832-58-0x0000000000020000-0x0000000000035000-memory.dmp

Filesize
84KB

Download
memory/832-56-0x0000000075291000-0x0000000075293000-memory.dmp

Filesize
8KB

Download
memory/832-57-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/832-54-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/832-66-0x0000000000020000-0x0000000000035000-memory.dmp

Filesize
84KB

Download
memory/1092-62-0x0000000000000000-mapping.dmp

Download
memory/1092-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1092-69-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/1092-70-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download
memory/1092-71-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download

Analysis

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