Analysis
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max time kernel
149s -
max time network
157s -
platform
windows7_x64 -
resource
win7 -
submitted
09-07-2020 13:32
Static task
static1
Behavioral task
behavioral1
Sample
FedexAWBClearanceInformation_PDF.exe
Resource
win7
Behavioral task
behavioral2
Sample
FedexAWBClearanceInformation_PDF.exe
Resource
win10
General
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Target
FedexAWBClearanceInformation_PDF.exe
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Size
792KB
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MD5
b0829b322fa68301b4d1ddcfa11a60a3
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SHA1
5fb2b75037ca30d1c22229d0b3a15544ac124e8d
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SHA256
e1241bc4febe8d5eeb08b49056d73fed437a4e58b84c2e71933fa30625349012
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SHA512
c438d77cf26a6ccb87f28804707ebe728b4f95e50e0bae7c5e79c020d1cb349acec028f3b80bef6f0d476cff2178410d149a9a8909cf968db9f3b7aeb2ccc0c1
Malware Config
Extracted
asyncrat
0.5.7B
null:null
AsyncMutex_6SI8OkPnk
-
aes_key
1z3fzEgoXZCUsXRTb5n4m2TboyKJnfKi
-
anti_detection
false
-
autorun
false
-
bdos
false
-
delay
GRACE OVERFLOW
-
host
null
-
hwid
3
- install_file
-
install_folder
%AppData%
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mutex
AsyncMutex_6SI8OkPnk
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pastebin_config
https://pastebin.com/raw/Q3bqVVf9
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port
null
-
version
0.5.7B
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
[email protected] - Password:
111aaa
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1064-14-0x0000000000400000-0x000000000045B000-memory.dmp family_agenttesla behavioral1/memory/1064-15-0x000000000040104C-mapping.dmp family_agenttesla behavioral1/memory/1064-17-0x0000000000400000-0x000000000045B000-memory.dmp family_agenttesla \Users\Admin\AppData\Local\Temp\net4bin.exe family_agenttesla C:\Users\Admin\AppData\Local\Temp\net4bin.exe family_agenttesla C:\Users\Admin\AppData\Local\Temp\net4bin.exe family_agenttesla -
Async RAT payload 9 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\hzbuild.exe asyncrat C:\Users\Admin\AppData\Roaming\hzbuild.exe asyncrat C:\Users\Admin\AppData\Roaming\hzbuild.exe asyncrat behavioral1/memory/1064-14-0x0000000000400000-0x000000000045B000-memory.dmp asyncrat behavioral1/memory/1064-15-0x000000000040104C-mapping.dmp asyncrat behavioral1/memory/1064-17-0x0000000000400000-0x000000000045B000-memory.dmp asyncrat \Users\Admin\AppData\Local\Temp\AsyncPbin.exe asyncrat C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exe asyncrat C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exe asyncrat -
Executes dropped EXE 4 IoCs
Processes:
hzbuild.exeAddInProcess32.exeAsyncPbin.exenet4bin.exepid process 540 hzbuild.exe 1064 AddInProcess32.exe 1412 AsyncPbin.exe 1816 net4bin.exe -
Loads dropped DLL 4 IoCs
Processes:
FedexAWBClearanceInformation_PDF.exehzbuild.exeAddInProcess32.exepid process 1032 FedexAWBClearanceInformation_PDF.exe 540 hzbuild.exe 1064 AddInProcess32.exe 1064 AddInProcess32.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\cxbuild = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\hzbuild.exe" reg.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
hzbuild.exedescription pid process target process PID 540 set thread context of 1064 540 hzbuild.exe AddInProcess32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
FedexAWBClearanceInformation_PDF.exehzbuild.exenet4bin.exepid process 1032 FedexAWBClearanceInformation_PDF.exe 1032 FedexAWBClearanceInformation_PDF.exe 1032 FedexAWBClearanceInformation_PDF.exe 540 hzbuild.exe 540 hzbuild.exe 540 hzbuild.exe 1816 net4bin.exe 1816 net4bin.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
FedexAWBClearanceInformation_PDF.exehzbuild.exenet4bin.exeAsyncPbin.exedescription pid process Token: SeDebugPrivilege 1032 FedexAWBClearanceInformation_PDF.exe Token: SeDebugPrivilege 540 hzbuild.exe Token: SeDebugPrivilege 1816 net4bin.exe Token: SeDebugPrivilege 1412 AsyncPbin.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
AddInProcess32.exepid process 1064 AddInProcess32.exe -
Suspicious use of WriteProcessMemory 32 IoCs
Processes:
FedexAWBClearanceInformation_PDF.execmd.exehzbuild.exeAddInProcess32.exenet4bin.exedescription pid process target process PID 1032 wrote to memory of 900 1032 FedexAWBClearanceInformation_PDF.exe cmd.exe PID 1032 wrote to memory of 900 1032 FedexAWBClearanceInformation_PDF.exe cmd.exe PID 1032 wrote to memory of 900 1032 FedexAWBClearanceInformation_PDF.exe cmd.exe PID 1032 wrote to memory of 900 1032 FedexAWBClearanceInformation_PDF.exe cmd.exe PID 900 wrote to memory of 1436 900 cmd.exe reg.exe PID 900 wrote to memory of 1436 900 cmd.exe reg.exe PID 900 wrote to memory of 1436 900 cmd.exe reg.exe PID 900 wrote to memory of 1436 900 cmd.exe reg.exe PID 1032 wrote to memory of 540 1032 FedexAWBClearanceInformation_PDF.exe hzbuild.exe PID 1032 wrote to memory of 540 1032 FedexAWBClearanceInformation_PDF.exe hzbuild.exe PID 1032 wrote to memory of 540 1032 FedexAWBClearanceInformation_PDF.exe hzbuild.exe PID 1032 wrote to memory of 540 1032 FedexAWBClearanceInformation_PDF.exe hzbuild.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 540 wrote to memory of 1064 540 hzbuild.exe AddInProcess32.exe PID 1064 wrote to memory of 1412 1064 AddInProcess32.exe AsyncPbin.exe PID 1064 wrote to memory of 1412 1064 AddInProcess32.exe AsyncPbin.exe PID 1064 wrote to memory of 1412 1064 AddInProcess32.exe AsyncPbin.exe PID 1064 wrote to memory of 1412 1064 AddInProcess32.exe AsyncPbin.exe PID 1064 wrote to memory of 1816 1064 AddInProcess32.exe net4bin.exe PID 1064 wrote to memory of 1816 1064 AddInProcess32.exe net4bin.exe PID 1064 wrote to memory of 1816 1064 AddInProcess32.exe net4bin.exe PID 1064 wrote to memory of 1816 1064 AddInProcess32.exe net4bin.exe PID 1816 wrote to memory of 1436 1816 net4bin.exe netsh.exe PID 1816 wrote to memory of 1436 1816 net4bin.exe netsh.exe PID 1816 wrote to memory of 1436 1816 net4bin.exe netsh.exe PID 1816 wrote to memory of 1436 1816 net4bin.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\FedexAWBClearanceInformation_PDF.exe"C:\Users\Admin\AppData\Local\Temp\FedexAWBClearanceInformation_PDF.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cxbuild /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\hzbuild.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cxbuild /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\hzbuild.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\AppData\Roaming\hzbuild.exe"C:\Users\Admin\AppData\Roaming\hzbuild.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exe"C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exe" 04⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\net4bin.exe"C:\Users\Admin\AppData\Local\Temp\net4bin.exe" 04⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile5⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exeMD5
6a673bfc3b67ae9782cb31af2f234c68
SHA17544e89566d91e84e3cd437b9a073e5f6b56566e
SHA256978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e
SHA51272c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39
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C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exeMD5
6a673bfc3b67ae9782cb31af2f234c68
SHA17544e89566d91e84e3cd437b9a073e5f6b56566e
SHA256978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e
SHA51272c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39
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C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exeMD5
e1b8d6bbb3bc4c31cb820b113b999547
SHA158758d548f964afe42418b8718331f15cf38b23c
SHA256081ed36d1d39e9ab29d11a45874073129921d52429ab9ccb9c2fcca62b9e89fb
SHA5124292abaa0bcd9c800891cdd1690adc0e4280319d67d76da683f9a0026d027f3921f291e752f1b8b57b6e4f94b6e56282c88240c98c09d4ad4cce93ac93663d65
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C:\Users\Admin\AppData\Local\Temp\AsyncPbin.exeMD5
e1b8d6bbb3bc4c31cb820b113b999547
SHA158758d548f964afe42418b8718331f15cf38b23c
SHA256081ed36d1d39e9ab29d11a45874073129921d52429ab9ccb9c2fcca62b9e89fb
SHA5124292abaa0bcd9c800891cdd1690adc0e4280319d67d76da683f9a0026d027f3921f291e752f1b8b57b6e4f94b6e56282c88240c98c09d4ad4cce93ac93663d65
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C:\Users\Admin\AppData\Local\Temp\net4bin.exeMD5
b7abd2c72219ab849c50cea10abb46fe
SHA18b3e653f1ac619e1ac7237f1b4ebe7aac884be0b
SHA256fd74c98b36deb73e5bffc922e891425972b3cf1f7a6957ec0443d5f8e4a244c3
SHA512088d5473dadb55f6b5076773c993758a4015c438f04f66ae9dcc16174e0ad2b833464c7f287ecc9e397cef99f6228124805db09a9194eb60460c6cd9b66d5cff
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C:\Users\Admin\AppData\Local\Temp\net4bin.exeMD5
b7abd2c72219ab849c50cea10abb46fe
SHA18b3e653f1ac619e1ac7237f1b4ebe7aac884be0b
SHA256fd74c98b36deb73e5bffc922e891425972b3cf1f7a6957ec0443d5f8e4a244c3
SHA512088d5473dadb55f6b5076773c993758a4015c438f04f66ae9dcc16174e0ad2b833464c7f287ecc9e397cef99f6228124805db09a9194eb60460c6cd9b66d5cff
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C:\Users\Admin\AppData\Roaming\hzbuild.exeMD5
b0829b322fa68301b4d1ddcfa11a60a3
SHA15fb2b75037ca30d1c22229d0b3a15544ac124e8d
SHA256e1241bc4febe8d5eeb08b49056d73fed437a4e58b84c2e71933fa30625349012
SHA512c438d77cf26a6ccb87f28804707ebe728b4f95e50e0bae7c5e79c020d1cb349acec028f3b80bef6f0d476cff2178410d149a9a8909cf968db9f3b7aeb2ccc0c1
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C:\Users\Admin\AppData\Roaming\hzbuild.exeMD5
b0829b322fa68301b4d1ddcfa11a60a3
SHA15fb2b75037ca30d1c22229d0b3a15544ac124e8d
SHA256e1241bc4febe8d5eeb08b49056d73fed437a4e58b84c2e71933fa30625349012
SHA512c438d77cf26a6ccb87f28804707ebe728b4f95e50e0bae7c5e79c020d1cb349acec028f3b80bef6f0d476cff2178410d149a9a8909cf968db9f3b7aeb2ccc0c1
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\Users\Admin\AppData\Local\Temp\AddInProcess32.exeMD5
6a673bfc3b67ae9782cb31af2f234c68
SHA17544e89566d91e84e3cd437b9a073e5f6b56566e
SHA256978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e
SHA51272c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39
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\Users\Admin\AppData\Local\Temp\AsyncPbin.exeMD5
e1b8d6bbb3bc4c31cb820b113b999547
SHA158758d548f964afe42418b8718331f15cf38b23c
SHA256081ed36d1d39e9ab29d11a45874073129921d52429ab9ccb9c2fcca62b9e89fb
SHA5124292abaa0bcd9c800891cdd1690adc0e4280319d67d76da683f9a0026d027f3921f291e752f1b8b57b6e4f94b6e56282c88240c98c09d4ad4cce93ac93663d65
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\Users\Admin\AppData\Local\Temp\net4bin.exeMD5
b7abd2c72219ab849c50cea10abb46fe
SHA18b3e653f1ac619e1ac7237f1b4ebe7aac884be0b
SHA256fd74c98b36deb73e5bffc922e891425972b3cf1f7a6957ec0443d5f8e4a244c3
SHA512088d5473dadb55f6b5076773c993758a4015c438f04f66ae9dcc16174e0ad2b833464c7f287ecc9e397cef99f6228124805db09a9194eb60460c6cd9b66d5cff
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\Users\Admin\AppData\Roaming\hzbuild.exeMD5
b0829b322fa68301b4d1ddcfa11a60a3
SHA15fb2b75037ca30d1c22229d0b3a15544ac124e8d
SHA256e1241bc4febe8d5eeb08b49056d73fed437a4e58b84c2e71933fa30625349012
SHA512c438d77cf26a6ccb87f28804707ebe728b4f95e50e0bae7c5e79c020d1cb349acec028f3b80bef6f0d476cff2178410d149a9a8909cf968db9f3b7aeb2ccc0c1
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memory/540-6-0x0000000000000000-mapping.dmp
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memory/900-3-0x0000000000000000-mapping.dmp
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memory/1032-1-0x0000000000000000-0x0000000000000000-disk.dmp
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memory/1064-17-0x0000000000400000-0x000000000045B000-memory.dmpFilesize
364KB
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memory/1064-15-0x000000000040104C-mapping.dmp
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memory/1064-14-0x0000000000400000-0x000000000045B000-memory.dmpFilesize
364KB
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memory/1412-21-0x0000000000000000-mapping.dmp
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memory/1436-4-0x0000000000000000-mapping.dmp
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memory/1436-28-0x0000000000000000-mapping.dmp
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memory/1816-24-0x0000000000000000-mapping.dmp