ammyyadmin | b29d4f97b9274450f159bd7e712738814b6643140be3ecb8e37a4c3aaec9354c

General

Target

1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Size

330KB
MD5

1954f7c5cf2ed21665937051cdb8b9d4
SHA1

37b324eb046260d19fa038b6829a06aa5ae73af8
SHA256

b29d4f97b9274450f159bd7e712738814b6643140be3ecb8e37a4c3aaec9354c
SHA512

bec30d6156da8b0e04a8831057eeb3d208e4385ee9d917d6c11a46eeac7e2e2b53502b10395e6d295caf5732d62a881d006e6f076e6ce653647eee5f8d57df80
SSDEEP

6144:ANuIJXtgwj5YkigHnoAlBKeUHM9V0WGqfiK6vRuTFzHteF2MmH0q/LTgv:AoI13j5YkdBKpHCBLiK+uTFzHteXmvjY

Score

10^/10

ammyyadmin flawedammyy discovery rat trojan upx

Malware Config

Signatures

Ammyy Admin
Remote admin tool with various capabilities.
rat ammyyadmin

AmmyyAdmin payload 3 IoCs

resource	yara_rule
behavioral2/memory/1704-4-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin
behavioral2/memory/2516-6-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin
behavioral2/memory/4404-11-0x0000000000400000-0x00000000004C3000-memory.dmp	family_ammyyadmin

FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
trojan 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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2516-0-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/1704-4-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/2516-6-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4404-11-0x0000000000400000-0x00000000004C3000-memory.dmp	upx

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	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d567366087c6658524c17525344380fd56b47b36b	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 88064717177b231daf091165e4d81c14497b460a1223c9d28ec8fde27f14cd7a130c0c3b7cd3bc1a3373e01af85b9899a21c4b5012f9d37f5f3248634d9919f804f23538b3cd246cd8cfb7	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4404	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4404	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 4404	1704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	83
PID 1704 wrote to memory of 4404	1704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	83
PID 1704 wrote to memory of 4404	1704	1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2516

C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe" -service -lunch
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\1954f7c5cf2ed21665937051cdb8b9d4_JaffaCakes118.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:4404

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
6066db6da458b212e6a837c8d90ff723

SHA1
f3909ff7c409e81c3430850ab1d96d7b09db0f84

SHA256
bb5d2f4a7b5fb6797672d7046e0238d0e04add79c9da2d7552e3abb17078d246

SHA512
7ae9371308e9084753301bacfde5d7ec3b9bea322d3472c2aa0023feaddd93f9423b60ac7f3fc9184f13a7816ea6ca463b3010a30923954d9c1ed5d538008b2d

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
75B

MD5
63cfea488e130c0a4c5f6f2e1de702e5

SHA1
dcbf0d5cb2bab56d4bbc20ba62e467bb4974bd1e

SHA256
b78437ec886f9436c8ffebb9dad0eaaf52265fbce3138052196861d64d211d6b

SHA512
66f8317277e69926348565ea2d484425fa969956c31e0ec908d01c84e159aa823d30f817d0d4435bb6f774a27dff2a51cce7ef9c7378e87c2500ed8c55b96638

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

Filesize
269B

MD5
a55567fceb74f9ca4f151f4ab84b68c7

SHA1
63b4a57b258e640b165732dbcd0ca00fc69b4c8b

SHA256
f649823939d0bf2b01f5c785e55d3e278c1ee7cc11b547c6644ac9f90996e9d7

SHA512
3cbeb788c068008bdf2c7c19b696d464e66f66a969164cf98793e3150cf5ff82822de41deabb79921cbfcc93897ee824872c64a7bd9e131b1304105cad0f010f

Download Submit
memory/1704-4-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2516-0-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2516-6-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/4404-11-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

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