Analysis
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max time kernel
115s -
max time network
121s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26/03/2024, 10:30
Static task
static1
Behavioral task
behavioral1
Sample
kYyBuIFRcL6U7Fl.exe
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
kYyBuIFRcL6U7Fl.exe
Resource
win10v2004-20231215-en
General
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Target
kYyBuIFRcL6U7Fl.exe
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Size
604KB
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MD5
dc6c813e0b5c0adab63e8f6e47d3fb76
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SHA1
c9979e87cf35d8563a16bf52ad762c04c89badc9
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SHA256
3d6012eb13b5a891571ea2d7c7bf120b9c12d479e5cb2c6ffc7e515e14c46866
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SHA512
c3e83b275c6aedbf56fe581b6e5f5b7f9ec33573c460eca63590a33326c08378dd7ea04b1d80807fdfc74738d432adb9b37892a0655aff8611d2e30f4d9f9ef3
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SSDEEP
12288:z+E26ddIYd1x66+9GreDc4bRbOpPE6/5kqRQeB0QzauW2a5W:aOwO1mQreDc4lypPp+kQelzauWS
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
sg2plcpnl0128.prod.sin2.secureserver.net - Port:
587 - Username:
[email protected] - Password:
]EMe[F7b^j@[ - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation kYyBuIFRcL6U7Fl.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 20 api.ipify.org 21 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 436 set thread context of 2860 436 kYyBuIFRcL6U7Fl.exe 91 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4340 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 436 kYyBuIFRcL6U7Fl.exe 4036 powershell.exe 452 powershell.exe 436 kYyBuIFRcL6U7Fl.exe 2860 RegSvcs.exe 2860 RegSvcs.exe 4036 powershell.exe 452 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 436 kYyBuIFRcL6U7Fl.exe Token: SeDebugPrivilege 4036 powershell.exe Token: SeDebugPrivilege 452 powershell.exe Token: SeDebugPrivilege 2860 RegSvcs.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 436 wrote to memory of 452 436 kYyBuIFRcL6U7Fl.exe 85 PID 436 wrote to memory of 452 436 kYyBuIFRcL6U7Fl.exe 85 PID 436 wrote to memory of 452 436 kYyBuIFRcL6U7Fl.exe 85 PID 436 wrote to memory of 4036 436 kYyBuIFRcL6U7Fl.exe 87 PID 436 wrote to memory of 4036 436 kYyBuIFRcL6U7Fl.exe 87 PID 436 wrote to memory of 4036 436 kYyBuIFRcL6U7Fl.exe 87 PID 436 wrote to memory of 4340 436 kYyBuIFRcL6U7Fl.exe 89 PID 436 wrote to memory of 4340 436 kYyBuIFRcL6U7Fl.exe 89 PID 436 wrote to memory of 4340 436 kYyBuIFRcL6U7Fl.exe 89 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91 PID 436 wrote to memory of 2860 436 kYyBuIFRcL6U7Fl.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:436 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:452
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UoqhCzdpcgs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4036
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UoqhCzdpcgs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72FD.tmp"2⤵
- Creates scheduled task(s)
PID:4340
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2860
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD51538960cbc4608606d9f16e2f2101d96
SHA1c37faea70aab7ccba3dea0410878d1e9c1a889be
SHA256b66f3f87d74a3be2825c056f4f066f06e904dcf0fc17d2dca12ac7a67de53cde
SHA51282aabe2f4578ac4aaed906eabc9b225a98af41a5807a9d87eee7bb3532d82544a0e3c4411bcc1b2569374b3b911c857607ce2af42447bb57da13413241fd8972
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5be8f93de5f1d1839387007ab939d0230
SHA13e6243566e045e7fe44ad8604208ad32507d658d
SHA256b8d975d50a0a4ec0bea2d730b1f47d483f53f512d83fb17c7b0bd315e0a761a6
SHA512d24fe1bc34c2611eeedacfcb422b91e601e9dda89b4f744e63dabb5f7e2869e1a0e485d033676b33d0026cb553cf7c1394362a9c4b47d87bd09158a3a6e4a072