Overview
overview
10Static
static
10bb63f83723...6e.exe
windows7-x64
7bb63f83723...6e.exe
windows10-2004-x64
7$PLUGINSDI...ns.dll
windows7-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows7-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...sh.dll
windows7-x64
3$PLUGINSDI...sh.dll
windows10-2004-x64
3PBWS32.dll
windows7-x64
1PBWS32.dll
windows10-2004-x64
3baro.exe
windows7-x64
1baro.exe
windows10-2004-x64
1dll/FreeImage.dll
windows7-x64
3dll/FreeImage.dll
windows10-2004-x64
3dll/Interop.WIA.dll
windows7-x64
1dll/Interop.WIA.dll
windows10-2004-x64
1dll/Markup...er.dll
windows7-x64
1dll/Markup...er.dll
windows10-2004-x64
1dll/PdfSharp.dll
windows7-x64
1dll/PdfSharp.dll
windows10-2004-x64
1dll/RegAsm.exe
windows7-x64
1dll/RegAsm.exe
windows10-2004-x64
1dll/SDD_TW...ER.dll
windows7-x64
1dll/SDD_TW...ER.dll
windows10-2004-x64
1dll/Saraff.Twain.dll
windows7-x64
1dll/Saraff.Twain.dll
windows10-2004-x64
1dll/System...ng.dll
windows7-x64
1dll/System...ng.dll
windows10-2004-x64
1dll/UzakYardim.exe
windows7-x64
10dll/UzakYardim.exe
windows10-2004-x64
10dll/WinSCP.exe
windows7-x64
6dll/WinSCP.exe
windows10-2004-x64
7Analysis
-
max time kernel
187s -
max time network
178s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08-03-2024 13:33
Behavioral task
behavioral1
Sample
bb63f8372394ec1a4a9a51985d14326e.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
bb63f8372394ec1a4a9a51985d14326e.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/advsplash.dll
Resource
win7-20240220-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/advsplash.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral9
Sample
PBWS32.dll
Resource
win7-20240215-en
Behavioral task
behavioral10
Sample
PBWS32.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral11
Sample
baro.exe
Resource
win7-20240221-en
Behavioral task
behavioral12
Sample
baro.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral13
Sample
dll/FreeImage.dll
Resource
win7-20240221-en
Behavioral task
behavioral14
Sample
dll/FreeImage.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral15
Sample
dll/Interop.WIA.dll
Resource
win7-20240221-en
Behavioral task
behavioral16
Sample
dll/Interop.WIA.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral17
Sample
dll/MarkupConverter.dll
Resource
win7-20240220-en
Behavioral task
behavioral18
Sample
dll/MarkupConverter.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral19
Sample
dll/PdfSharp.dll
Resource
win7-20231129-en
Behavioral task
behavioral20
Sample
dll/PdfSharp.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral21
Sample
dll/RegAsm.exe
Resource
win7-20240221-en
Behavioral task
behavioral22
Sample
dll/RegAsm.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral23
Sample
dll/SDD_TWAIN_SCANNER.dll
Resource
win7-20240221-en
Behavioral task
behavioral24
Sample
dll/SDD_TWAIN_SCANNER.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral25
Sample
dll/Saraff.Twain.dll
Resource
win7-20240221-en
Behavioral task
behavioral26
Sample
dll/Saraff.Twain.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral27
Sample
dll/System.Drawing.dll
Resource
win7-20240221-en
Behavioral task
behavioral28
Sample
dll/System.Drawing.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral29
Sample
dll/UzakYardim.exe
Resource
win7-20240221-en
Behavioral task
behavioral30
Sample
dll/UzakYardim.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral31
Sample
dll/WinSCP.exe
Resource
win7-20240221-en
Behavioral task
behavioral32
Sample
dll/WinSCP.exe
Resource
win10v2004-20240226-en
General
-
Target
dll/UzakYardim.exe
-
Size
740KB
-
MD5
10a524d7ac94678ae286b065421647db
-
SHA1
b538e3f113817c8237419310ef47817d1d961fa9
-
SHA256
55daa062650d42e0feabc5ae1c3e4a7f68d4f8a3c69be375a0abc7bf3e1efad4
-
SHA512
928b0e712e604a5ba9580ff6ecadbdf77e2fda6847b11366ce929281ae8e5e3a633073ff07176989ddcb5f8387c6f7c061729af99b61a23a319ddeb7d63ace1b
-
SSDEEP
12288:pUYpJqMH2OwlaUPcWWw5XZV8f64RteVpN5ETMasTjmgvPi:ZpJJWOwlaUPcWWwRZb4Rt+N5WMasHDy
Malware Config
Signatures
-
FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
-
Drops file in System32 directory 4 IoCs
Processes:
UzakYardim.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 UzakYardim.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE UzakYardim.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies UzakYardim.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 UzakYardim.exe -
Modifies data under HKEY_USERS 9 IoCs
Processes:
UzakYardim.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix UzakYardim.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" UzakYardim.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin UzakYardim.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE UzakYardim.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin UzakYardim.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e1552531312c240152eb26b UzakYardim.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 484e8d050c46a4d570aeb75387f49a132d552ad5a9abd2cd03968648af901891f85b7176f2775638537a89dec765653e40a779102c105e79e4a4515382aa370ffa9d0aba UzakYardim.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" UzakYardim.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy UzakYardim.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
UzakYardim.exepid process 940 UzakYardim.exe -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
UzakYardim.exepid process 940 UzakYardim.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
UzakYardim.exedescription pid process target process PID 3984 wrote to memory of 940 3984 UzakYardim.exe UzakYardim.exe PID 3984 wrote to memory of 940 3984 UzakYardim.exe UzakYardim.exe PID 3984 wrote to memory of 940 3984 UzakYardim.exe UzakYardim.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"1⤵PID:4668
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C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe" -service -lunch1⤵
- Suspicious use of WriteProcessMemory
PID:3984 -
C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"C:\Users\Admin\AppData\Local\Temp\dll\UzakYardim.exe"2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:940
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
-
Filesize
22B
MD5a9d1d03bee202107fd1bbcd59a2ece65
SHA1cf9f5c95c947f65fd4547f82591b7c03cded4a53
SHA256581933970ed622b78b2031308d523e7b0ad4f512192ef77702d0d136ae6a591e
SHA51224cd8eb9b2a0f0bcf28538b59d2beca857dd76faf24cdf70a5b2a15ac4f11a38c73491a95240448b6ab7a4e3f4c1172780f5aed8bfdd2a3b6e0017457746a817
-
Filesize
68B
MD52e75e398017b1026fba96887d1d3e110
SHA1e529165a52c7422740491ebdd1b4f70a1b922a30
SHA25642ed2ea3ec077eec455ad7f323bfb146519ee4a140c4ff24733e23fd4863e881
SHA5129c1aefcc81816664bc9e762e3726b57e2833838d5957abfd0fe13abaee4983cf2082fc3479d7dfddfc3b97717654d85a7687bc7e4e14fde92133af35166a2d75
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Filesize
331B
MD5c5b80443bc31f2f5c1d2e384c3b82961
SHA1445a99fa06484d216276b9284eedf25483780216
SHA256cc8225e7412000f34a92f118af842d585d575498f36fe772dedad9f88c1fe5ad
SHA512eae9247b9a1abbf8822ce65dbfd2db9b59a57367c7885614b89b8608688753e0c71fc8c955eb1493ef4dd7ba952760ff3476e05d9c177fb40661765a9e408d97