flawedammyy | 5767921da620f5755d8ebb63c78fa3c2806003eede39253806813724e62f632a

General

Target

JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Size

709KB
MD5

2104f66da494fb2cac8d654f02cd85d7
SHA1

98e44b9c65c15384da664d1b548e408b486e47bc
SHA256

5767921da620f5755d8ebb63c78fa3c2806003eede39253806813724e62f632a
SHA512

24cebfda8f1b90bc542f19d3c0ae8e7b51771c4e7e5b2fd2560dec1866b74f1172d85a6dbbf809a5f5bb9ecbac6a25db3477e8eec2fdb2d5f55fe4470b1555dc
SSDEEP

12288:J/VanOH+kAX8CrJpc4+9djmLfN971Rtc3MmylZDaehlJgJ:faOH+kbCr/c4+9hm7r1Rt4MmylZDV6J

Score

10^/10

flawedammyy discovery trojan

Malware Config

Signatures

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan flawedammyy
Flawedammyy family
flawedammyy

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.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	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d567366087c6658524c175253a754e25a1c31b36b	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = ca33dc16f3799cf8284d2129e963edac909c60c2c88be758cb4f36937d7e45b57922bcf05786d084df5f5551eaa0167ccd3762e57a71772191a93297f021bfe9f427d41b63a3e245a9098e	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2684	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2684	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2684	2676	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe	32
PID 2676 wrote to memory of 2684	2676	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe	32
PID 2676 wrote to memory of 2684	2676	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe	32
PID 2676 wrote to memory of 2684	2676	JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2164

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2104f66da494fb2cac8d654f02cd85d7.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
51f6259dc558b2bb0a4ec50c7a4fe547

SHA1
409ae2b45a6ac31c736631aa2e57d1f60a899541

SHA256
ac01fea0971dbc01f5e80215b57beb6787bea159d1917ce5840cc0c9e193e668

SHA512
e899f52065232d064c436351c5e96d9cf968745912f11fceefa116ef497fb48f2ba068a1924688081ccd58a3bd427fd335e591f67f5cba8f9c1e17d33c94ae82

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
4780bd79fd2b9c16db0a3743dbe16680

SHA1
6eda1124d0edc78a1c696f4ff99a86160031ef81

SHA256
3fe805cfa75f3d722db5cd18c5aa21c8c5f25d730e811cd31367300c5ea4b965

SHA512
a18ccb894abffee0a9eb6eb383a08874496146ff23f9faecba6d3cc4c68b690a1e210597e948ea0f5cdcd01fe9185089db1000fbe540fc5b93cf340d980d80eb

Download Submit
C:\ProgramData\AMMYY\settings3.bin

Filesize
269B

MD5
097a18ed7b31114c7ef39ef06eff02f0

SHA1
276bb5fc8ab72ed3a447dd57be668ace8f75a7c1

SHA256
985b458559939244b777d09d71d6192a13f693b88b046ca904012603a5582812

SHA512
168ef05ddb434dd4003748c7cd6ea9ed5c8280506de4473c3b193fffc314b469e85e2474f919f189c9b7ffb16aa741d75900341a9802dae175ad185e1fea3e96

Download Submit

Analysis

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