0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e

General

Target
jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
Size 68KB
Sample260924-mc171attbv
SHA256 0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e
MD5 a937d9282a62cbe3d40630ee90b73300
SHA1 d18327c1fd7f0e79eb7b09c4178d20a57bda22a4
SHA512 5b011071a0329c0e869e69e01780cdcaa4cfd52c42728d524ceeb95e1895cf501fd6e4c71989eeece9d0a89fd31ff138593983e3a266f9501f552cb0b586ad11
SSDEEP 768:cKPh/p60xld5GFDgzG0wDvxqHyF7dcEJp4YLaCnfuQgA+aQgcKValhDIPvGeEfMK:cEL0Mi0wEH2K6B2CfQgZQDzexuEg7O6
TLSH
T16063C006C2C70457CD20C9BD05E25FBA846A69F229B54EFE4FC18FF9642D269D2371CA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion discovery execution

Malware Config

Signatures

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5664	rundll32.exe

Disables service(s) 3 TTPs
defense_evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002

Loads dropped DLL 1 IoCs

pid	Process
5664	rundll32.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Drops file in System32 directory 10 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ksuser.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\midimap.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\yumsimg32.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\yuksuser.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\yumidimap.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\msimg32.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\dllcache\msimg32.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
File created	C:\Windows\SysWOW64\sysapp21.dll	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1168	sc.exe
5040	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 4860	4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe	89
PID 4656 wrote to memory of 1168	4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe	90
PID 4656 wrote to memory of 5040	4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe	91
PID 4656 wrote to memory of 5664	4656	jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe	93
PID 4860 wrote to memory of 5532	4860	net.exe	96

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5532
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1168
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1790245201.dat, ServerMain c:\users\admin\appdata\local\temp\jaffacakes118_0c4b794d9127f22862947d87e08f779ef905b9bb41b7b22cc5b862bb577f429e.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:5664

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

2

T1569

Service Execution

2

T1569.002

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

2

T1489

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Downloads

1790245201.dat

Path C:\Users\Admin\AppData\Local\Temp\1790245201.dat
Size 37KB
SHA256 0c15f0eaa1bf85b02ab74419c16ec748445664387a0d3f08ad6fafed373c73dd
MD5 50471de52e57d0c0c51c88d0915501c3
SHA1 cf8c65430ec77824ef4e978b2ab158dfc024e9e8
SHA512 c24647f2ae4c4985ca64ac6a07e6ea6234689cacaaaaf21f713cd4077370bdaf54a128fea86a7fd4d50852b87873f7123cde96f559809d0ab4165c1c97289a2c
SSDEEP 768:u6GNaBS1DHrtBKVGQeBMr3hD7IQilNI1SVObLlTRyjsj:LGNcgDxpBMT97IflNdsTRya
TLSH
T121035C137B078072E1A2813177816BB48BF87C705D06A596FB33B74A1DB51C7DA3AA07
MD5 SHA1 SHA512 SSDEEP TLSH

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