Analysis
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max time kernel
99s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
22-02-2021 07:26
Static task
static1
Behavioral task
behavioral1
Sample
YKRAB010B_KHE_Preminary Packing List.xlsx.exe
Resource
win7v20201028
General
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Target
YKRAB010B_KHE_Preminary Packing List.xlsx.exe
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Size
1.1MB
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MD5
9a06197daf40639c61cc898e8db91340
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SHA1
ffe7c6850523c7d4c7336dee86e65662d8a228db
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SHA256
7a44d661f4c1ac837b0045dc28562b098cb66b5e371bda8a79ef00000fa66a65
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SHA512
c90c7d9d0809e266a57110681078aaec2e224a01c567d7c6c115300b046ff1ea15d3b9f37d58aaf003e24a33714caa63b765275947515d7a45228eb208b4e277
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.hyshippingcn.com - Port:
587 - Username:
[email protected] - Password:
e*u@qkS4
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2712-18-0x000000000043763E-mapping.dmp family_agenttesla behavioral2/memory/2712-22-0x0000000000340000-0x000000000037C000-memory.dmp family_agenttesla -
Executes dropped EXE 1 IoCs
Processes:
InstallUtil.exepid process 2712 InstallUtil.exe -
Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule behavioral2/memory/1036-11-0x0000000005F80000-0x0000000005FA1000-memory.dmp agile_net -
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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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 18 api.ipify.org 19 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
YKRAB010B_KHE_Preminary Packing List.xlsx.exedescription pid process target process PID 1036 set thread context of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
YKRAB010B_KHE_Preminary Packing List.xlsx.exeInstallUtil.exepid process 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe 2712 InstallUtil.exe 2712 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
YKRAB010B_KHE_Preminary Packing List.xlsx.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe Token: SeDebugPrivilege 2712 InstallUtil.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
YKRAB010B_KHE_Preminary Packing List.xlsx.exedescription pid process target process PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe PID 1036 wrote to memory of 2712 1036 YKRAB010B_KHE_Preminary Packing List.xlsx.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\YKRAB010B_KHE_Preminary Packing List.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\YKRAB010B_KHE_Preminary Packing List.xlsx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1036 -
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2712
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e