nymaim | 7df0752b03c785feec29e5a4aeb6e3d492a36e0bb7577c8d18d714b7a5c18965

General

Target

file.exe
Size

2.3MB
MD5

7949952f3f677ee2b0c983ee88129c22
SHA1

0c0c9678c44e69d86ab2ab4dea04e6b99c0237a9
SHA256

7df0752b03c785feec29e5a4aeb6e3d492a36e0bb7577c8d18d714b7a5c18965
SHA512

8f36dae477f6a1c01afdc7e0e9921120f3267393c2725827504f0156028d86820fe14f483252bb8a8d3b9116f5293623454b8e819e10e213fe55f08904adbfb1
SSDEEP

49152:Z2xyrK0PzRrbGPuGO7ZBRDwhRd5hQAyLH8GQ/AoA5hq:Mcrd57tbivdDQzLYiDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

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
4240	is-NP8O0.tmp
1032	evsearcher59.exe
2192	KiEmhck8ZcMd4.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	evsearcher59.exe

Loads dropped DLL 1 IoCs

pid	Process
4240	is-NP8O0.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)\evSearcher\is-78MSF.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-0MPA9.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-V3O7K.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-4GDEQ.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-HHOSS.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-QHK84.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-2BS9C.tmp	is-NP8O0.tmp
File opened for modification	C:\Program Files (x86)\evSearcher\unins000.dat	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\unins000.dat	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-A7D3J.tmp	is-NP8O0.tmp
File created	C:\Program Files (x86)\evSearcher\is-HOHAV.tmp	is-NP8O0.tmp
File opened for modification	C:\Program Files (x86)\evSearcher\evsearcher59.exe	is-NP8O0.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
4424	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1032	evsearcher59.exe
1032	evsearcher59.exe
1032	evsearcher59.exe
1032	evsearcher59.exe
1032	evsearcher59.exe
1032	evsearcher59.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4424	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 4240	4076	file.exe	83
PID 4076 wrote to memory of 4240	4076	file.exe	83
PID 4076 wrote to memory of 4240	4076	file.exe	83
PID 4240 wrote to memory of 1032	4240	is-NP8O0.tmp	84
PID 4240 wrote to memory of 1032	4240	is-NP8O0.tmp	84
PID 4240 wrote to memory of 1032	4240	is-NP8O0.tmp	84
PID 1032 wrote to memory of 2192	1032	evsearcher59.exe	88
PID 1032 wrote to memory of 2192	1032	evsearcher59.exe	88
PID 1032 wrote to memory of 2192	1032	evsearcher59.exe	88
PID 1032 wrote to memory of 2228	1032	evsearcher59.exe	93
PID 1032 wrote to memory of 2228	1032	evsearcher59.exe	93
PID 1032 wrote to memory of 2228	1032	evsearcher59.exe	93
PID 2228 wrote to memory of 4424	2228	cmd.exe	95
PID 2228 wrote to memory of 4424	2228	cmd.exe	95
PID 2228 wrote to memory of 4424	2228	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\is-MPLFT.tmp\is-NP8O0.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MPLFT.tmp\is-NP8O0.tmp" /SL4 $8004C "C:\Users\Admin\AppData\Local\Temp\file.exe" 2115285 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4240
- - C:\Program Files (x86)\evSearcher\evsearcher59.exe
    "C:\Program Files (x86)\evSearcher\evsearcher59.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1032
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\KiEmhck8ZcMd4.exe
      4⤵
      Executes dropped EXE
      PID:2192
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "evsearcher59.exe" /f & erase "C:\Program Files (x86)\evSearcher\evsearcher59.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2228
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "evsearcher59.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4424

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)\evSearcher\evsearcher59.exe

Filesize
3.3MB

MD5
1bd1a16f7056dffbbf2ea31f863cd7d6

SHA1
1c657c42fc4e921abe638286b681c1d9bb644a32

SHA256
d862dfc66348bdaf465efd59284a387e42de4a8624d1c98cba82f17ff118280d

SHA512
21d3ca070cc86f04f4af2f5434ab0f23ea14328a748f9c909ac0fbdf5f3a78c705dd3bd11f829caeb00850aded3f48801d576764dc207d1c005abf015a76d382

Download Submit
C:\Program Files (x86)\evSearcher\evsearcher59.exe

Filesize
3.3MB

MD5
1bd1a16f7056dffbbf2ea31f863cd7d6

SHA1
1c657c42fc4e921abe638286b681c1d9bb644a32

SHA256
d862dfc66348bdaf465efd59284a387e42de4a8624d1c98cba82f17ff118280d

SHA512
21d3ca070cc86f04f4af2f5434ab0f23ea14328a748f9c909ac0fbdf5f3a78c705dd3bd11f829caeb00850aded3f48801d576764dc207d1c005abf015a76d382

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F79U3.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MPLFT.tmp\is-NP8O0.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MPLFT.tmp\is-NP8O0.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\KiEmhck8ZcMd4.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\KiEmhck8ZcMd4.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1032-143-0x0000000000400000-0x000000000154A000-memory.dmp

Filesize
17.3MB

Download
memory/1032-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1032-142-0x0000000000400000-0x000000000154A000-memory.dmp

Filesize
17.3MB

Download
memory/1032-155-0x0000000000400000-0x000000000154A000-memory.dmp

Filesize
17.3MB

Download
memory/1032-152-0x0000000000400000-0x000000000154A000-memory.dmp

Filesize
17.3MB

Download
memory/4076-134-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4076-151-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4076-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4076-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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