2a32ff30ecc8d58809a5a14bbef7e12a9656b5a4a8eda1dbdb1c9fe44076206c

General

Target

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
Size

804KB
MD5

a5f9d631a761520fbfc5dd3fbd0455a8
SHA1

052862f59ead4541d91c35f754300f52fd6e532d
SHA256

2a32ff30ecc8d58809a5a14bbef7e12a9656b5a4a8eda1dbdb1c9fe44076206c
SHA512

8ff5769c644242fdec1ba3f9eb2085638855d44cc8458ec8ad6a66d6d688ccb1160372ad17f10f111a1771ba3d29d8339f99b1d77190251aca8762b29dc23972
SSDEEP

24576:VxqT31T6WE6I5jKqosOm9b1Rzj8zc13FbckWYjG+/:s6WE6IN959b1RzYzc13JFHjG+/

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\system32\\csrcs.exe"	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

csrcs.exe

pid process

4100 csrcs.exe

pid	process
4100	csrcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\csrcs = "C:\\Windows\\system32\\csrcs.exe"	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/3612-0-0x0000000000400000-0x00000000004AB000-memory.dmp	autoit_exe
C:\Windows\SysWOW64\csrcs.exe	autoit_exe

Drops file in System32 directory 2 IoCs

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
File created	C:\Windows\SysWOW64\csrcs.exe	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\csrcs.exe	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.execsrcs.exe

pid	process
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
4100	csrcs.exe
4100	csrcs.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe

description	pid	process	target process
PID 3612 wrote to memory of 4100	3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe	csrcs.exe
PID 3612 wrote to memory of 4100	3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe	csrcs.exe
PID 3612 wrote to memory of 4100	3612	a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe	csrcs.exe

C:\Users\Admin\AppData\Local\Temp\a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a5f9d631a761520fbfc5dd3fbd0455a8_JaffaCakes118.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3612

C:\Windows\SysWOW64\csrcs.exe
"C:\Windows\System32\csrcs.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4100

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\puxymbd
Filesize
89KB

MD5
95d4df0948fde610ac0eb1f16738570f

SHA1
b48bdd0cc964014399f8795619b0ee5460a0f13a

SHA256
c73f1904f2cc337b38c4f22c4f5a0a26c007abc06572ac41a030896709cbd455

SHA512
063cc55c28244a12680ac5c24528f9eb984fdf84711ce5da59cbff8bea41daedb33cda4c0823c01a37bca39bdc27d82b6b7fa89ca25e857ec133b8fb1303a91e

Download Submit
C:\Windows\SysWOW64\csrcs.exe
Filesize
804KB

MD5
a5f9d631a761520fbfc5dd3fbd0455a8

SHA1
052862f59ead4541d91c35f754300f52fd6e532d

SHA256
2a32ff30ecc8d58809a5a14bbef7e12a9656b5a4a8eda1dbdb1c9fe44076206c

SHA512
8ff5769c644242fdec1ba3f9eb2085638855d44cc8458ec8ad6a66d6d688ccb1160372ad17f10f111a1771ba3d29d8339f99b1d77190251aca8762b29dc23972

Download Submit
memory/3612-0-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads