cobaltstrike | a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07

General

Target

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
Size

307KB
MD5

7ca67f4affcd827c467dc432e556426b
SHA1

be9b41b4741a4eb679cd89b3094781f608d090ff
SHA256

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07
SHA512

17aab01c271be04637b7250f418fbd760a347fd459fdb10ca849ab1abe44845fd8dad0990dd7172338e10da0322100b8d46980159ab029c4212e4dee4ae5ea58
SSDEEP

6144:HkSzoT72Y0S+zinYKTY1SQshfRPVQe1MZkIYSccr7wbstOkPECYeixlYGicx:HkqE7SSpYsY1UMqMZJYSN7wbstOk8fvf

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:

ywokfo.exe

pid process

864 ywokfo.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1404 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

pid process

1156 a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

pid	process
1404	cmd.exe

pid	process
1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ywokfo.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\Currentversion\Run	ywokfo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\{E8A35E48-3774-AD4D-52EE-D422474DF73F} = "C:\\Users\\Admin\\AppData\\Roaming\\Otru\\ywokfo.exe"	ywokfo.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

description	pid	process	target process
PID 1156 set thread context of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\Privacy	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

ywokfo.exe

pid	process
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe
864	ywokfo.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exeywokfo.exe

description	pid	process	target process
PID 1156 wrote to memory of 864	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	ywokfo.exe
PID 1156 wrote to memory of 864	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	ywokfo.exe
PID 1156 wrote to memory of 864	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	ywokfo.exe
PID 1156 wrote to memory of 864	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	ywokfo.exe
PID 864 wrote to memory of 1120	864	ywokfo.exe	taskhost.exe
PID 864 wrote to memory of 1120	864	ywokfo.exe	taskhost.exe
PID 864 wrote to memory of 1120	864	ywokfo.exe	taskhost.exe
PID 864 wrote to memory of 1120	864	ywokfo.exe	taskhost.exe
PID 864 wrote to memory of 1120	864	ywokfo.exe	taskhost.exe
PID 864 wrote to memory of 1172	864	ywokfo.exe	Dwm.exe
PID 864 wrote to memory of 1172	864	ywokfo.exe	Dwm.exe
PID 864 wrote to memory of 1172	864	ywokfo.exe	Dwm.exe
PID 864 wrote to memory of 1172	864	ywokfo.exe	Dwm.exe
PID 864 wrote to memory of 1172	864	ywokfo.exe	Dwm.exe
PID 864 wrote to memory of 1200	864	ywokfo.exe	Explorer.EXE
PID 864 wrote to memory of 1200	864	ywokfo.exe	Explorer.EXE
PID 864 wrote to memory of 1200	864	ywokfo.exe	Explorer.EXE
PID 864 wrote to memory of 1200	864	ywokfo.exe	Explorer.EXE
PID 864 wrote to memory of 1200	864	ywokfo.exe	Explorer.EXE
PID 864 wrote to memory of 1156	864	ywokfo.exe	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
PID 864 wrote to memory of 1156	864	ywokfo.exe	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
PID 864 wrote to memory of 1156	864	ywokfo.exe	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
PID 864 wrote to memory of 1156	864	ywokfo.exe	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
PID 864 wrote to memory of 1156	864	ywokfo.exe	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 1156 wrote to memory of 1404	1156	a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe	cmd.exe
PID 864 wrote to memory of 948	864	ywokfo.exe	conhost.exe
PID 864 wrote to memory of 948	864	ywokfo.exe	conhost.exe
PID 864 wrote to memory of 948	864	ywokfo.exe	conhost.exe
PID 864 wrote to memory of 948	864	ywokfo.exe	conhost.exe
PID 864 wrote to memory of 948	864	ywokfo.exe	conhost.exe

C:\Users\Admin\AppData\Local\Temp\a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe
"C:\Users\Admin\AppData\Local\Temp\a08e6350ff827b1949ca14e7375ed610326f983da4aacb730db7c91ee7e35a07.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1156

C:\Users\Admin\AppData\Roaming\Otru\ywokfo.exe
"C:\Users\Admin\AppData\Roaming\Otru\ywokfo.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:864

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpa6667b79.bat"
2⤵
- Deletes itself
PID:1404

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

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1172

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1120

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-1197745028144752550-234648853-2135675867-1899269697-511791271-349632908-891541334"
1⤵
PID:948

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\LocalLow\syfeo.hin
Filesize
466B

MD5
6c1e895175052b77157ad649fb212bda

SHA1
cce3673667010729bd3060711e1381dd9b64b1d4

SHA256
9c40bd76dd1f704b455c6072e1838e6f76c9e57d62be8b79c32a715c103f65e4

SHA512
b45f86bf71952c203b860629e56df2ff8b8d95ce69a2928066129d5039f9a7a933d78b3bcb08b1768f6cfe7f45f45bdca3db3c693ee53213eb44668f06de9c4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpa6667b79.bat
Filesize
307B

MD5
b6af1eba25b7fbd1df911aeb788baeb1

SHA1
eac06fd00c2a04aeedff9b2dbb71988983ef59b2

SHA256
93f947aac1c6ce309bec84b700c2569c89a03b6c858b42df2aede4c32a596874

SHA512
b92df0810dc75e7412941b753264920c6c36b8242c162bf200de6b507e6a278588220438e4612d52a02bae1ea36382e360b785a0365d3cf9512d64c6771a9590

Download Submit
C:\Users\Admin\AppData\Roaming\Otru\ywokfo.exe
Filesize
307KB

MD5
9a0f415f3c0b597d98b385013bff0937

SHA1
36bed11704e9e7e9d80a96ba2f3e414b061e82ae

SHA256
e40681c8e52c3c130a6b7fd59f1b3eda8d259e52244ad91c063a1e70511f0973

SHA512
f2d68aaa9ebf1893f24d044e86e457a482f7cf7812ea4d20038fe529534c6117b76215f29939a4f820fec89a9edc8d30efa3c90a553b8d587057e467d89cce41

Download Submit
C:\Users\Admin\AppData\Roaming\Otru\ywokfo.exe
Filesize
307KB

MD5
9a0f415f3c0b597d98b385013bff0937

SHA1
36bed11704e9e7e9d80a96ba2f3e414b061e82ae

SHA256
e40681c8e52c3c130a6b7fd59f1b3eda8d259e52244ad91c063a1e70511f0973

SHA512
f2d68aaa9ebf1893f24d044e86e457a482f7cf7812ea4d20038fe529534c6117b76215f29939a4f820fec89a9edc8d30efa3c90a553b8d587057e467d89cce41

Download Submit
\Users\Admin\AppData\Roaming\Otru\ywokfo.exe
Filesize
307KB

MD5
9a0f415f3c0b597d98b385013bff0937

SHA1
36bed11704e9e7e9d80a96ba2f3e414b061e82ae

SHA256
e40681c8e52c3c130a6b7fd59f1b3eda8d259e52244ad91c063a1e70511f0973

SHA512
f2d68aaa9ebf1893f24d044e86e457a482f7cf7812ea4d20038fe529534c6117b76215f29939a4f820fec89a9edc8d30efa3c90a553b8d587057e467d89cce41

Download Submit
memory/864-115-0x0000000000340000-0x0000000000391000-memory.dmp

Filesize
324KB

Download
memory/864-93-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/864-59-0x0000000000000000-mapping.dmp

Download
memory/864-90-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/864-63-0x0000000000340000-0x0000000000391000-memory.dmp

Filesize
324KB

Download
memory/948-111-0x0000000001FA0000-0x0000000001FE4000-memory.dmp

Filesize
272KB

Download
memory/948-110-0x0000000001FA0000-0x0000000001FE4000-memory.dmp

Filesize
272KB

Download
memory/948-112-0x0000000001FA0000-0x0000000001FE4000-memory.dmp

Filesize
272KB

Download
memory/948-113-0x0000000001FA0000-0x0000000001FE4000-memory.dmp

Filesize
272KB

Download
memory/1120-66-0x0000000000420000-0x0000000000464000-memory.dmp

Filesize
272KB

Download
memory/1120-68-0x0000000000420000-0x0000000000464000-memory.dmp

Filesize
272KB

Download
memory/1120-69-0x0000000000420000-0x0000000000464000-memory.dmp

Filesize
272KB

Download
memory/1120-70-0x0000000000420000-0x0000000000464000-memory.dmp

Filesize
272KB

Download
memory/1120-71-0x0000000000420000-0x0000000000464000-memory.dmp

Filesize
272KB

Download
memory/1156-86-0x0000000000220000-0x0000000000264000-memory.dmp

Filesize
272KB

Download
memory/1156-92-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1156-62-0x0000000000220000-0x0000000000271000-memory.dmp

Filesize
324KB

Download
memory/1156-104-0x0000000000220000-0x0000000000264000-memory.dmp

Filesize
272KB

Download
memory/1156-61-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1156-54-0x00000000008B0000-0x0000000000901000-memory.dmp

Filesize
324KB

Download
memory/1156-88-0x0000000000220000-0x0000000000264000-memory.dmp

Filesize
272KB

Download
memory/1156-87-0x0000000000220000-0x0000000000264000-memory.dmp

Filesize
272KB

Download
memory/1156-89-0x0000000000220000-0x0000000000264000-memory.dmp

Filesize
272KB

Download
memory/1156-103-0x00000000008B0000-0x0000000000901000-memory.dmp

Filesize
324KB

Download
memory/1156-91-0x0000000000220000-0x0000000000271000-memory.dmp

Filesize
324KB

Download
memory/1156-57-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1156-56-0x000000007EF60000-0x000000007EFA4000-memory.dmp

Filesize
272KB

Download
memory/1156-94-0x0000000000220000-0x0000000000271000-memory.dmp

Filesize
324KB

Download
memory/1156-55-0x0000000075671000-0x0000000075673000-memory.dmp

Filesize
8KB

Download
memory/1172-76-0x0000000001B40000-0x0000000001B84000-memory.dmp

Filesize
272KB

Download
memory/1172-74-0x0000000001B40000-0x0000000001B84000-memory.dmp

Filesize
272KB

Download
memory/1172-77-0x0000000001B40000-0x0000000001B84000-memory.dmp

Filesize
272KB

Download
memory/1172-75-0x0000000001B40000-0x0000000001B84000-memory.dmp

Filesize
272KB

Download
memory/1200-80-0x0000000002960000-0x00000000029A4000-memory.dmp

Filesize
272KB

Download
memory/1200-83-0x0000000002960000-0x00000000029A4000-memory.dmp

Filesize
272KB

Download
memory/1200-82-0x0000000002960000-0x00000000029A4000-memory.dmp

Filesize
272KB

Download
memory/1200-81-0x0000000002960000-0x00000000029A4000-memory.dmp

Filesize
272KB

Download
memory/1404-99-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1404-107-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1404-102-0x00000000000671E6-mapping.dmp

Download
memory/1404-101-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1404-100-0x0000000000050000-0x0000000000094000-memory.dmp

Filesize
272KB

Download
memory/1404-97-0x0000000000050000-0x0000000000094000-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