agenttesla | 1d5026cbfdcd2825631dd77f8f5149e275f03ec78390f94e63dad83d778569c1

Analysis

max time kernel
108s
max time network
52s
platform
windows7_x64
resource
win7v20210408
submitted
21-07-2021 17:52

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General

Target

Inv-04_PDF.vbs
Size

2.3MB
MD5

b6a05c3a37dde3db4a8005dfaeda9e97
SHA1

c0b64b85e13865a76136ce2d5674ebca53246566
SHA256

1d5026cbfdcd2825631dd77f8f5149e275f03ec78390f94e63dad83d778569c1
SHA512

730b73dc411f25c3c79d1fe6272c797a076ab85da48162379ad32ad36c40806b2a13cf0671ab3e646c45a34fbeaf5f95091e2c7bfcfb10a889b6a17ef2de0e16

Score

10^/10

agenttesla nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

sys2021.linkpc.net:11940

23.94.82.41:11940

Mutex

de7e01ad-963b-4e14-81aa-08dfb351f0fe

Attributes

activate_away_mode
false
backup_connection_host
23.94.82.41
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-04-24T08:14:59.254967636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
11940
default_group
Do
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
de7e01ad-963b-4e14-81aa-08dfb351f0fe
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sys2021.linkpc.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.jetport-aero.com
Port:
587
Username:
[email protected]
Password:
Niniola@456

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

file1.exefile2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\eXPLorerInternet64\\Explorer64int.exe\","	file1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\eXPLorerInternet64\\Explorer64int.exe\","	file2.exe

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/592-90-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/592-92-0x0000000000437B0E-mapping.dmp	family_agenttesla
behavioral1/memory/592-96-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Executes dropped EXE 4 IoCs

Processes:

file1.exefile2.exeInstallUtil.exeInstallUtil.exe

pid process

1108 file1.exe
988 file2.exe
592 InstallUtil.exe
1032 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

file1.exefile2.exe

pid process

1108 file1.exe
988 file2.exe

pid	process
1108	file1.exe
988	file2.exe
592	InstallUtil.exe
1032	InstallUtil.exe

pid	process
1108	file1.exe
988	file2.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

file1.exefile2.exe

description	pid	process	target process
PID 1108 set thread context of 592	1108	file1.exe	InstallUtil.exe
PID 988 set thread context of 1032	988	file2.exe	InstallUtil.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

file1.exefile2.exeInstallUtil.exe

pid process

1108 file1.exe
1108 file1.exe
988 file2.exe
988 file2.exe
592 InstallUtil.exe
592 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

file1.exefile2.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1108 file1.exe
Token: SeDebugPrivilege 988 file2.exe
Token: SeDebugPrivilege 592 InstallUtil.exe

pid	process
1108	file1.exe
1108	file1.exe
988	file2.exe
988	file2.exe
592	InstallUtil.exe
592	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1108	file1.exe
Token: SeDebugPrivilege	988	file2.exe
Token: SeDebugPrivilege	592	InstallUtil.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WScript.exefile1.exefile2.exe

description	pid	process	target process
PID 1248 wrote to memory of 1108	1248	WScript.exe	file1.exe
PID 1248 wrote to memory of 1108	1248	WScript.exe	file1.exe
PID 1248 wrote to memory of 1108	1248	WScript.exe	file1.exe
PID 1248 wrote to memory of 1108	1248	WScript.exe	file1.exe
PID 1248 wrote to memory of 988	1248	WScript.exe	file2.exe
PID 1248 wrote to memory of 988	1248	WScript.exe	file2.exe
PID 1248 wrote to memory of 988	1248	WScript.exe	file2.exe
PID 1248 wrote to memory of 988	1248	WScript.exe	file2.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe
PID 1108 wrote to memory of 592	1108	file1.exe	InstallUtil.exe
PID 988 wrote to memory of 1032	988	file2.exe	InstallUtil.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Inv-04_PDF.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\file1.exe
  "C:\Users\Admin\AppData\Local\Temp\file1.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:592
- C:\Users\Admin\AppData\Local\Temp\file2.exe
  "C:\Users\Admin\AppData\Local\Temp\file2.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:988
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    3⤵
    - Executes dropped EXE
    PID:1032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\file1.exe

MD5
672e9fdc80f39f27f98a048b9f51aea0

SHA1
506479c1633363f4ac0276e59d6b66f648cf4a33

SHA256
a9497517888f5e6e725fa5afd4faed80eec9f218438dbccf2c9e6e1b37aa8ed1

SHA512
eb8bb241076cfbda03db01d20341cc73fd7a807ce33442528232941c89c2da0007e0cee339d82c27446c9310b00036d1816be8e5f3a78ee85e37cdd4d9194e3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\file1.exe

MD5
672e9fdc80f39f27f98a048b9f51aea0

SHA1
506479c1633363f4ac0276e59d6b66f648cf4a33

SHA256
a9497517888f5e6e725fa5afd4faed80eec9f218438dbccf2c9e6e1b37aa8ed1

SHA512
eb8bb241076cfbda03db01d20341cc73fd7a807ce33442528232941c89c2da0007e0cee339d82c27446c9310b00036d1816be8e5f3a78ee85e37cdd4d9194e3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\file2.exe

MD5
b564a2bae72f01f3e3fb726184fed4c9

SHA1
c64494a88d69fe8974e5742841d1d12fc07c0d6e

SHA256
03707d7ad90db602966ae1e86703672c77d0ec94bd125cd026846f188f893be1

SHA512
7779a5e4f7b7136c72034667c8a0e7c13cec1c2a02ccdde65bb936609333b86b1e7d5c3a7ae6cbb46462244dd134a3daf2bd9af6a6d43e8ced33f4f1a52d5da3

Download Submit
C:\Users\Admin\AppData\Local\Temp\file2.exe

MD5
b564a2bae72f01f3e3fb726184fed4c9

SHA1
c64494a88d69fe8974e5742841d1d12fc07c0d6e

SHA256
03707d7ad90db602966ae1e86703672c77d0ec94bd125cd026846f188f893be1

SHA512
7779a5e4f7b7136c72034667c8a0e7c13cec1c2a02ccdde65bb936609333b86b1e7d5c3a7ae6cbb46462244dd134a3daf2bd9af6a6d43e8ced33f4f1a52d5da3

Download Submit
C:\Users\Admin\AppData\Roaming\eXPLorerInternet64\Explorer64int.exe

MD5
119dda6069de3d87790d369175a0bbbf

SHA1
1583d5a1fdbfcb04565bb16964539e807e40522c

SHA256
b7c50d5b1a99739c374a4f00ea60e662fec7cb89545c6a9f6104b8d65ef874e2

SHA512
95d66a3af0139aa08d158aef19ef3c9efbfbceec5af65a50384d36e0a9641b03d2da1447ef7f6082cda4b2821ab6b027a9da7a29825f7c8dce73158ad3645ed5

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/592-96-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/592-100-0x0000000004990000-0x0000000004991000-memory.dmp

Filesize
4KB

Download
memory/592-90-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/592-92-0x0000000000437B0E-mapping.dmp

Download
memory/988-74-0x0000000000680000-0x00000000006E2000-memory.dmp

Filesize
392KB

Download
memory/988-72-0x0000000004E65000-0x0000000004E76000-memory.dmp

Filesize
68KB

Download
memory/988-83-0x0000000006280000-0x00000000062E7000-memory.dmp

Filesize
412KB

Download
memory/988-70-0x0000000004E60000-0x0000000004E61000-memory.dmp

Filesize
4KB

Download
memory/988-66-0x0000000000A90000-0x0000000000A91000-memory.dmp

Filesize
4KB

Download
memory/988-62-0x0000000000000000-mapping.dmp

Download
memory/1032-93-0x000000000041E792-mapping.dmp

Download
memory/1032-98-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1032-91-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1108-65-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download
memory/1108-84-0x0000000005030000-0x00000000050A8000-memory.dmp

Filesize
480KB

Download
memory/1108-73-0x0000000000820000-0x000000000087C000-memory.dmp

Filesize
368KB

Download
memory/1108-71-0x0000000004375000-0x0000000004386000-memory.dmp

Filesize
68KB

Download
memory/1108-69-0x0000000004370000-0x0000000004371000-memory.dmp

Filesize
4KB

Download
memory/1108-59-0x0000000000000000-mapping.dmp

Download