a63de1840c26f10d5881a152ba21e8c2fe63691482cdb9aae774b1cc52a56332

General

Target

a722f9d9529debf6f3b0544b96c710cb.exe
Size

12.9MB
MD5

a722f9d9529debf6f3b0544b96c710cb
SHA1

cf53e04b1a3ba8afa903ee310a02c9a1b5b27e17
SHA256

a63de1840c26f10d5881a152ba21e8c2fe63691482cdb9aae774b1cc52a56332
SHA512

a40f87704d848a13bd3eb17201f3cca48188d74878fb905f748e68455b0225949c94c47e310abbed8c8ff4c5e56cea0901316d33a70555b2031b486b70e04919

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

rwjjmlbg.exe

pid process

1876 rwjjmlbg.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1512 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rwjjmlbg.exe

description pid process target process

PID 1876 set thread context of 1512 1876 rwjjmlbg.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1876	rwjjmlbg.exe

pid	process
1512	svchost.exe

description	pid	process	target process
PID 1876 set thread context of 1512	1876	rwjjmlbg.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

a722f9d9529debf6f3b0544b96c710cb.exerwjjmlbg.exe

description	pid	process	target process
PID 512 wrote to memory of 2208	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 2208	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 2208	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 2708	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 2708	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 2708	512	a722f9d9529debf6f3b0544b96c710cb.exe	cmd.exe
PID 512 wrote to memory of 3828	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3828	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3828	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 2684	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 2684	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 2684	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3592	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3592	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3592	512	a722f9d9529debf6f3b0544b96c710cb.exe	sc.exe
PID 512 wrote to memory of 3396	512	a722f9d9529debf6f3b0544b96c710cb.exe	netsh.exe
PID 512 wrote to memory of 3396	512	a722f9d9529debf6f3b0544b96c710cb.exe	netsh.exe
PID 512 wrote to memory of 3396	512	a722f9d9529debf6f3b0544b96c710cb.exe	netsh.exe
PID 1876 wrote to memory of 1512	1876	rwjjmlbg.exe	svchost.exe
PID 1876 wrote to memory of 1512	1876	rwjjmlbg.exe	svchost.exe
PID 1876 wrote to memory of 1512	1876	rwjjmlbg.exe	svchost.exe
PID 1876 wrote to memory of 1512	1876	rwjjmlbg.exe	svchost.exe
PID 1876 wrote to memory of 1512	1876	rwjjmlbg.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\a722f9d9529debf6f3b0544b96c710cb.exe
"C:\Users\Admin\AppData\Local\Temp\a722f9d9529debf6f3b0544b96c710cb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:512

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ayuzrh\
2⤵
PID:2208

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rwjjmlbg.exe" C:\Windows\SysWOW64\ayuzrh\
2⤵
PID:2708

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ayuzrh binPath= "C:\Windows\SysWOW64\ayuzrh\rwjjmlbg.exe /d\"C:\Users\Admin\AppData\Local\Temp\a722f9d9529debf6f3b0544b96c710cb.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:3828

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ayuzrh "wifi internet conection"
2⤵
PID:2684

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ayuzrh
2⤵
PID:3592

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
PID:3396

C:\Windows\SysWOW64\ayuzrh\rwjjmlbg.exe
C:\Windows\SysWOW64\ayuzrh\rwjjmlbg.exe /d"C:\Users\Admin\AppData\Local\Temp\a722f9d9529debf6f3b0544b96c710cb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1876

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1512

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

1

T1089

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\rwjjmlbg.exe
MD5
18217842220d48392b84b2e9df5e0381

SHA1
458b1e030346b3953177ca180893853d3977b24b

SHA256
f704ae9b4bec31785bf5281afdbf32e222dbe93cfbfac8d24e328986b2b38f1f

SHA512
ddfa32f37c54e5dcc68636a030f29756b7d5c00da8a3d72614339d2b9644788b2f66682d2e6100f8681875a27a1e58bad2409b7908ff25f56196d3e41232b125

Download Submit
C:\Windows\SysWOW64\ayuzrh\rwjjmlbg.exe
MD5
18217842220d48392b84b2e9df5e0381

SHA1
458b1e030346b3953177ca180893853d3977b24b

SHA256
f704ae9b4bec31785bf5281afdbf32e222dbe93cfbfac8d24e328986b2b38f1f

SHA512
ddfa32f37c54e5dcc68636a030f29756b7d5c00da8a3d72614339d2b9644788b2f66682d2e6100f8681875a27a1e58bad2409b7908ff25f56196d3e41232b125

Download Submit
memory/1512-11-0x0000000002F69A6B-mapping.dmp

Download
memory/1512-10-0x0000000002F60000-0x0000000002F75000-memory.dmp

Filesize
84KB

Download
memory/1512-12-0x0000000002F60000-0x0000000002F75000-memory.dmp

Filesize
84KB

Download
memory/2208-2-0x0000000000000000-mapping.dmp

Download
memory/2684-6-0x0000000000000000-mapping.dmp

Download
memory/2708-3-0x0000000000000000-mapping.dmp

Download
memory/3396-8-0x0000000000000000-mapping.dmp

Download
memory/3592-7-0x0000000000000000-mapping.dmp

Download
memory/3828-5-0x0000000000000000-mapping.dmp

Download

Analysis

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