2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5

General

Target

2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5.exe
Size

285KB
MD5

e7dfb892dbd65b0ed6fed69b20edf739
SHA1

1cc4b53dcd7add65fe4b11531751b43f2d7e387d
SHA256

2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5
SHA512

d60efd3e1d0472056c6974599582595eb9b774a04ef764e6f98cfa042095e10d57c0f994383e9bd76b8a1292d72296546f15f725abf0c3487f1daad42e5b26eb
SSDEEP

6144:x6b/9DJpBnx85mwif0odtTZGbpYByPT7lyvIcySIvF68fx6:Q/9dpBnzwYTvByPHly5VIvk8J6

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
20	1972	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2252	1972	WerFault.exe	82

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1972	1048	2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5.exe	82
PID 1048 wrote to memory of 1972	1048	2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5.exe
"C:\Users\Admin\AppData\Local\Temp\2a4637eeb74d47ddbe7ff10f005806bce77ee877b9ae52f55bf6ae425cc3fcd5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\system32\rundll32.exe
  "C:\Users\Admin\AppData\Roaming\nsis_unse569705.dll",PrintUIEntry |5CQkOhmAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAKVkHwBs8|AtBQPz8DK|ADYATABTIwBm|wBLAFcAcABOuwBJTQBmAHotAln|SIPsKOgEAgD|AEiDxCjDzMz|zEyJRCQYSIn|VCQQSIlMJAj+XQFIi0QkMEiJ2wQkgQE4SG8ACEhvx0QkEC0B6w6BAV8QSIPAAY8BEIEBt0BIOZYAcyWfA4v|DCRIA8hIi8HXSItMqwFUewAD0f9Ii8qKCYgI6|3BZgVlSIsEJWD+8|AzyUiLUBhI|zvRdDZIg8Ig|0iLAkg7wnQq|2aDeEgYdRpM|4tAUGZBgzhru3QHERFLdQgREHj|EC50BUiLAOuv1UiLSP0AwWoAQP9TVVZXQVRBVe9BVkFXXQFmgTn|TVpNi|hMi|K|SIvZD4X88|BM|2NJPEGBPAlQv0UAAA+F6vPwQe+LhAmI8|CFwEi|jTwBD4TWahGDd7wJjC0BD4TH8|D|RItnIESLXxz|i3ckRItPGEz|A+FMA9lIA|H|M8lFhckPhKT+8|BNi8RBixBF|zPSSAPTigKE|8B0HUHByg0Pe77A+gABRAPQvxH|dexBgfqq|A3|fHQOg8EBSYP|wARBO8lzaev|xovBD7cMTkX|iyyLTAPrdFj7M+2qEHRRQYsU|sEA0zPJigJMi9|C6w|BycgRA8je5RABQYoA1RDtM3|AM|ZBOwy24BD+pgCDxgGD+Ahy|+7rCkiLy0H|f9VJiQT3g8XkEH|EBDtvGHKvZgH|QV9BXkFdQVzvX15dWzMXSIHs+2ABZACL6ehm|v|||0iFwA+EmNZ1IEyNrwGLKxDIM|f|6Jt9II1fBEz|jUVGM9KLy||3VCRogCBMi+AP64RrdSBFqBAzwIt905EgSIl8JCCmIP1wgCBIi|APhEv8dSCmIFBIjVYIRH+NR0BIjYwkhRG|SIvY6Hz9fiCNq1ZI3iAQ4iHM8|Do|WfvIESLBo1XCPRBIKYgWMohiYQkgNqHEt7z8IsO2iBYiWOMJHERBzCRIOgx7yD7i5wtMkyLXTpI74P7bEiKIDBMib9kJDhMi6QaMky7iVyEAYQk3IcRhu2SjRGNR0swjCTwfvPwSYvU6On8BTC7ipx4MkiNhHgyQf+A8yGNT2xEMP0YpAKD6QF184H9vHgyIVJleHVN74uEJPQiMZQk+P41AcJIO9hyOIP|+mx2M0SNSUCe+gCUQbgAmACmIECeyiL4dBlEtjDAMUnvjVQkbJEgSYPod2zoa4IwSIvOpiD|eEiF|3QSi1XzQkyOMBsxSI1MJD9A|9dIgcR0IWEkAC0ILQE=
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - outlook_office_path
  - outlook_win_path
  PID:1972
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 1972 -s 304
    3⤵
    - Program crash
    PID:2252

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 460 -p 1972 -ip 1972
1⤵
PID:4820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\nsis_unse569705.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
C:\Users\Admin\AppData\Roaming\nsis_unse569705.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
memory/1048-132-0x0000000000954000-0x0000000000965000-memory.dmp

Filesize
68KB

Download
memory/1048-133-0x00000000007C0000-0x00000000007DD000-memory.dmp

Filesize
116KB

Download
memory/1048-139-0x00000000007C0000-0x00000000007DD000-memory.dmp

Filesize
116KB

Download
memory/1972-134-0x0000000000000000-mapping.dmp

Download
memory/1972-137-0x000001B6E2BB0000-0x000001B6E2BB7000-memory.dmp

Filesize
28KB

Download
memory/1972-138-0x00007FF477A30000-0x00007FF477B2A000-memory.dmp

Filesize
1000KB

Download
memory/1972-140-0x00007FFCA1BF0000-0x00007FFCA1C15000-memory.dmp

Filesize
148KB

Download
memory/1972-141-0x00007FF477A30000-0x00007FF477B2A000-memory.dmp

Filesize
1000KB

Download

Analysis

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