7967a0c3fdeaa6884db43f14ac974f0a94e976e85aab92729ead93d4955f156d

General

Target

aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe
Size

14KB
MD5

aa0e24f39ddf539241205ba422a113da
SHA1

c733d5e7f2d2bc4ca4b0fcb790c521f07518fd31
SHA256

7967a0c3fdeaa6884db43f14ac974f0a94e976e85aab92729ead93d4955f156d
SHA512

6d6ed0c9ec3e7c1d07244a475d24d9cf152cc8c7cfed527280bc94e10c7e6c346b3f000c2b51322e77c744ea6e6b35871b9242c9e43e7ee9fb387d0e2df1c740
SSDEEP

384:Q7/EgdDWpfpRAwbfRDQWF3sZnOSHePUmAy7S:QAgdqJAqRDQWF3sZOdJV

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
4412	biroask.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1888-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/files/0x000a000000023390-4.dat	upx
behavioral2/memory/1888-6-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/4412-8-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/4412-9-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/4412-18-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/4412-19-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\biroask.exe	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\biroask.exe	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\biroas.dll	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	biroask.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe
1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 4412	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	100
PID 1888 wrote to memory of 4412	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	100
PID 1888 wrote to memory of 4412	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	100
PID 1888 wrote to memory of 4980	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	107
PID 1888 wrote to memory of 4980	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	107
PID 1888 wrote to memory of 4980	1888	aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe	107

C:\Users\Admin\AppData\Local\Temp\aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Windows\SysWOW64\biroask.exe
  C:\Windows\system32\biroask.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4412
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4980

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4200,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=4216 /prefetch:8
1⤵
PID:4500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\aa0e24f39ddf539241205ba422a113da_JaffaCakes118.exe.bat

Filesize
210B

MD5
c63852fecee353392d185a652e262412

SHA1
509ee21eec3fbf58f6768edbcf7f87032cf8cab6

SHA256
96fc0c432865e50e79587978756ab7b488fe2fba3ae1268b3e50ec5624922c79

SHA512
ee126274237de3f96a7a12b744bbb89afa39708d757fa3fe14fc94deecddff0d300f0260075afaef06b1f331ad421e70e7d8d219cc81c7274f30bfebbf6fb95b

Download Submit
C:\Windows\SysWOW64\biroask.exe

Filesize
14KB

MD5
aa0e24f39ddf539241205ba422a113da

SHA1
c733d5e7f2d2bc4ca4b0fcb790c521f07518fd31

SHA256
7967a0c3fdeaa6884db43f14ac974f0a94e976e85aab92729ead93d4955f156d

SHA512
6d6ed0c9ec3e7c1d07244a475d24d9cf152cc8c7cfed527280bc94e10c7e6c346b3f000c2b51322e77c744ea6e6b35871b9242c9e43e7ee9fb387d0e2df1c740

Download Submit
memory/1888-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1888-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4412-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4412-9-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4412-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4412-19-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

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