nymaim | 60ac20a2abc9241fce627496d762f97f630b4bdf955419298cdd6bf77900029c

General

Target

file.exe
Size

2.6MB
MD5

4375eb9b85b6d5b113153568f9d56f43
SHA1

0c4c1f199f81f48395e2c80018a0e8717dcdd80d
SHA256

60ac20a2abc9241fce627496d762f97f630b4bdf955419298cdd6bf77900029c
SHA512

4f1a5557fc32d87a422c290a12a8f419d2d6715b1c9fa37f99c9e4ee585379380ebd8621657d0d3606e2939a67ce359367c1c0f3518f20e0eb30c34bdc4d20f5
SSDEEP

49152:Z2xYfi/FZWIfiHV9/cchwEieItA4be21QRHY/YSrmSK0UlnUDfUUp0HSA5hq:MBFZS16c+E2a4fCRHksUDfUJDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.15.156.54

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
4336	is-O9UPD.tmp
3256	dusearcher46.exe
4032	AEUk5.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	dusearcher46.exe

Loads dropped DLL 1 IoCs

pid	Process
4336	is-O9UPD.tmp

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

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\duSearcher\is-ALU52.tmp	is-O9UPD.tmp
File opened for modification	C:\Program Files (x86)\duSearcher\dusearcher46.exe	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-SCP27.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-T9MTD.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-F93VH.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-0CFVK.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-KAPOA.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\unins000.dat	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-9LQ7N.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-OI6U1.tmp	is-O9UPD.tmp
File created	C:\Program Files (x86)\duSearcher\is-34V4B.tmp	is-O9UPD.tmp
File opened for modification	C:\Program Files (x86)\duSearcher\unins000.dat	is-O9UPD.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4924	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3256	dusearcher46.exe
3256	dusearcher46.exe
3256	dusearcher46.exe
3256	dusearcher46.exe
3256	dusearcher46.exe
3256	dusearcher46.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3256	dusearcher46.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4924	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 4336	4712	file.exe	81
PID 4712 wrote to memory of 4336	4712	file.exe	81
PID 4712 wrote to memory of 4336	4712	file.exe	81
PID 4336 wrote to memory of 3256	4336	is-O9UPD.tmp	82
PID 4336 wrote to memory of 3256	4336	is-O9UPD.tmp	82
PID 4336 wrote to memory of 3256	4336	is-O9UPD.tmp	82
PID 3256 wrote to memory of 4032	3256	dusearcher46.exe	83
PID 3256 wrote to memory of 4032	3256	dusearcher46.exe	83
PID 3256 wrote to memory of 4032	3256	dusearcher46.exe	83
PID 3256 wrote to memory of 4440	3256	dusearcher46.exe	91
PID 3256 wrote to memory of 4440	3256	dusearcher46.exe	91
PID 3256 wrote to memory of 4440	3256	dusearcher46.exe	91
PID 4440 wrote to memory of 4924	4440	cmd.exe	93
PID 4440 wrote to memory of 4924	4440	cmd.exe	93
PID 4440 wrote to memory of 4924	4440	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Users\Admin\AppData\Local\Temp\is-M67ML.tmp\is-O9UPD.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-M67ML.tmp\is-O9UPD.tmp" /SL4 $801BA "C:\Users\Admin\AppData\Local\Temp\file.exe" 2440180 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4336
- - C:\Program Files (x86)\duSearcher\dusearcher46.exe
    "C:\Program Files (x86)\duSearcher\dusearcher46.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:3256
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\AEUk5.exe
      4⤵
      Executes dropped EXE
      PID:4032
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "dusearcher46.exe" /f & erase "C:\Program Files (x86)\duSearcher\dusearcher46.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4440
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "dusearcher46.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\duSearcher\dusearcher46.exe

Filesize
4.3MB

MD5
6d90514102b8acecd6297b469b62e0e3

SHA1
5326ee32debb34e029e490f8f3e9a06ee4ef0912

SHA256
637ce25a7655971d7c9745088f9458e5ff80a03519962a08e13389f45c760ce6

SHA512
ec861373a888e605033c08d55fe904b4d40c68a3bfe469374d585f914090eeae59b8f06dff103b1d6a0703c6bdc12d2908b2bfaacbad077f75062479ad9b27c6

Download Submit
C:\Program Files (x86)\duSearcher\dusearcher46.exe

Filesize
4.3MB

MD5
6d90514102b8acecd6297b469b62e0e3

SHA1
5326ee32debb34e029e490f8f3e9a06ee4ef0912

SHA256
637ce25a7655971d7c9745088f9458e5ff80a03519962a08e13389f45c760ce6

SHA512
ec861373a888e605033c08d55fe904b4d40c68a3bfe469374d585f914090eeae59b8f06dff103b1d6a0703c6bdc12d2908b2bfaacbad077f75062479ad9b27c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9PCRL.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-M67ML.tmp\is-O9UPD.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-M67ML.tmp\is-O9UPD.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\AEUk5.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\AEUk5.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3256-145-0x0000000000400000-0x0000000001641000-memory.dmp

Filesize
18.3MB

Download
memory/3256-144-0x0000000000400000-0x0000000001641000-memory.dmp

Filesize
18.3MB

Download
memory/3256-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3256-153-0x0000000000400000-0x0000000001641000-memory.dmp

Filesize
18.3MB

Download
memory/3256-156-0x0000000000400000-0x0000000001641000-memory.dmp

Filesize
18.3MB

Download
memory/4712-134-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4712-139-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4712-157-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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