flawedammyy | 349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a

General

Target

349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Size

722KB
MD5

45c9b54d66cbcc2de89f93e25f368a45
SHA1

2e5265f35f75a50c89e592e127bc80e1e45aa840
SHA256

349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a
SHA512

25c3f1ec6d2e233464090f584777b15f18acfd1cb12124c236680689545ec8208bc364d26d7202e38368dbec34cd824600afb51845df8c9de8c8e83fba8d8b1f
SSDEEP

12288:x2QKNGp2YPjE0d63iVg5Bfi781Rt1hpGqzdpW9eKVQvTPRpsbS5hEgK:xSIp2Ydd6SVcpz1RtXpGadsbShK

Score

10^/10

flawedammyy trojan

Malware Config

Signatures

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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253aa0c12afe51ab26b	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Ammyy	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 742e92c605dc388defafc6021c934dbee99210bf6b92f29d3d626fa213bf5113ae6d50db7048ace25758d43d8fd4be7422348b8ca95e28de4f937dd8834f6f9131e5b1a4	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2140	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2140	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2140	2084	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe	92
PID 2084 wrote to memory of 2140	2084	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe	92
PID 2084 wrote to memory of 2140	2084	349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe	92

C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
"C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe"
1⤵
PID:2760

C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
"C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe" -service -lunch
1⤵
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe
  "C:\Users\Admin\AppData\Local\Temp\349f7e00ee29b349b00c32318cb9b829b162167702957295712d37ebbb2a7a9a.exe"
  2⤵
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2140

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\ProgramData\AMMYY\hr

Filesize
22B

MD5
33468c19c0a408004c5916b18ab9084c

SHA1
a6ebae26e8ec182df20ef18f6db80dc53e36a95c

SHA256
347cc718a0f4b20243de8f4c6343ab7e52f87cd241064dc4f5f45e0f4c99d7c0

SHA512
3915c4f0e1fb7a3588d272bfe28cbeecc0bc8e2715ce87c99aa9db20b24ac964d42d6c67cba5067d641eb690a973823fed4fb62938d1fc40b3000f424cd531bc

Download Submit
C:\ProgramData\AMMYY\hr3

Filesize
68B

MD5
be3fa7f873c0ccbc56f61f903836daed

SHA1
08c11875802dc368541385d9a5d4281a4b7e712f

SHA256
1b37643253761409f632ca333e55edbd92e411264827f2c4345720f138e1ded1

SHA512
1b8ace7652b82fe7d805b837d276b1667532d01f2b79a209cbf188a27f504ae2e41c4096f7d0265e5369e2ccc42eb2e47214d41bd622109d66a767e0ef2e93cf

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

Filesize
270B

MD5
6910d9160b66c4395f587a279e80f132

SHA1
54949c04c8c0970aa5e2d3fb2912318daab97b98

SHA256
72d44ac6019d486fc1a58334ff8ed692de0a9ed96de3142638c71376ceade87c

SHA512
82967a8bdbad58f2a81d063c84294153dbdd86322d4b6e3631122530dc7f00fd209ed1d2b0683eb60f726fd3d6f93c7615bd1d0d1fa1f5441119d0e5007582b9

Download Submit

Analysis

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